Document:

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                                                  Exhibit 10.5

              FIRST AMENDMENT TO OFFICE LEASE
              -------------------------------

     THIS FIRST AMENDMENT TO OFFICE LEASE (this "Amendment") is
made as of this 2nd day of March, 2001, by and between
CORNERSTONE SUBURBAN OFFICE, L.P., a Delaware limited partnership
("Landlord"), having an address at 311 South Wacker Drive, Suite
980, Chicago, Illinois 60606, and ANTRIM CORPORATION, a Texas
corporation ("Tenant"), having an address at 101 East Park Blvd.,
Suite 1200, Plano, Texas 75074.

                         RECITALS:
                         --------

     A.   Landlord's predecessor in title and Tenant entered into
a certain lease dated June 1, 1996 (the "Lease"), whereby
Landlord's predecessor in title leased to Tenant certain premises
consisting of approximately 47,420 rentable square feet of office
space on the tenth (10th), eleventh (11th), twelfth (12th) and
thirteenth (13th) floors (the "Original Premises") of that
certain building known as Bank of America Plano Tower located at
101 East Park Blvd., Plano, Texas (the "Building"), for a lease
term expiring on May 31, 2001 (the "Original Term").

     B.   Landlord acquired title to the Building and succeeded
to the interest of the landlord under the Lease.

     C.   Landlord and Tenant desire to extend the Original Term
of the Lease as provided herein.

     D.   Landlord and Tenant have further agreed that, subject
to the terms and conditions of this Amendment, Tenant shall
vacate, and the Lease shall terminate solely as to, a portion of
the Original Premises, and in connection therewith, Landlord and
Tenant desire to modify the Lease accordingly.

     NOW, THEREFORE, for good and valuable consideration, the
receipt and legal sufficiency of which are hereby acknowledged,
it is hereby agreed as follows:

1.   DEFINITIONS.  Each capitalized term used in this
Amendment shall have the same meaning as is ascribed to such
capitalized term in the Lease, unless otherwise provided for
herein.

2.   EXTENSION OF TERM.  The Expiration Date of the Original
Term of the Lease is extended from May 31, 2001 to May 31, 2006.
As used herein and in the Lease, the "Term" of the Lease shall
mean the Original Term, as extended through May 31, 2006 pursuant
to the immediately preceding sentence of this Paragraph 2.  All
of the provisions of the Lease shall be applicable to the balance
of the Term of the Lease occurring after May 31, 2001, except as
otherwise provided in this Amendment.  The Renewal Option set
forth in Exhibit H to the Lease is hereby deleted and shall be of
no further force or effect.

3.   TERMINATED SPACE.  Effective as of 11:59 p.m. on May 31,
2001, the Original Premises shall be reduced by that portion of
the Original Premises located on the tenth (10th) and thirteenth
(13th) floors of the Building, consisting of approximately 12,922
rentable square feet and known as Suites 1001 and 1300
(collectively, the "Terminated Space"), and from and after May
31, 2001, the term "Premises" as used and defined in the Lease,
as amended hereby, shall be deemed to mean and refer to 34,498
rentable square feet of office space on the 11th (Suite 1100) and
12th (Suite 1200) floors of the Building and being the Original
Premises less the Terminated Space.  On or before May 31, 2001,
Tenant shall

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surrender, vacate and deliver possession of the Terminated Space
to Landlord.  Tenant shall surrender the Terminated Space in the
condition required pursuant to Section 14 of the Lease.  If Tenant
fails to timely surrender and vacate the Terminated Space, then the
provisions of Article 15 of the Lease shall apply to Tenant's holding
over in the Terminated Space. Neither Landlord nor Tenant shall have
any rights, estates, obligations or liabilities under the Lease with
respect to the Terminated Space for that part of the Term accruing after
May 31, 2001, except those which, pursuant to the provisions of the
Lease, as amended hereby, expressly survive the expiration or
termination of the Term (specifically including, without
limitation, the obligation to make a final reconciliation under
Article 4 of the Lease of the Additional Rent owing for the
Terminated Space for calendar year 2001).

4.   ELEVATOR LOBBY.  Tenant shall pay (as set forth in Exhibit
A) for modifications to the elevator lobby in that portion of the
Premises located on the twelfth (12th) floor of the Building so
as to (a) provide public access to the elevator running between
the twelfth (12th) and thirteenth (13th) floors and (b) comply
with all applicable Laws (collectively, the "Elevator Lobby
Work", with such area being referred to herein as the "Elevator
Lobby").  The Elevator Lobby shall become, upon completion of the
Elevator Lobby Work, a part of the Common Areas.  The Elevator
Lobby Work shall be performed as provided in Exhibit A attached
hereto.

5.   CONDITION OF SPACE.  No promises of Landlord to alter,
remodel, improve, repair, decorate or clean the Premises or any
part thereof have been made, and no representation respecting the
condition of the Premises or the Building has been made, to
Tenant by or on behalf of Landlord, except as provided in Exhibit
A hereto.

6.   RENT.

     A.   Effective as of June 1, 2001, Monthly Rent for the
Premises shall be paid in the manner provided in the Lease in the
following amounts for the following periods:

Period                      Monthly Rent        Annual Rent
------                      ------------        -----------
6/1/01 through 5/31/02        $57,496.67        $689,960.04
6/1/02 through 5/31/03         58,934.08         707,208.96
6/1/03 through 5/31/04         60,371.50         724,458.00
6/1/04 through 5/31/05         61,808.92         741,707.04
6/1/05 through 5/31/06         63,246.33         758,955.96

     B.   Effective as of June 1, 2001 and continuing thereafter
until the Expiration Date, Tenant shall pay Tenant's Pro Rata
Share of Taxes and Operating Expenses as provided under Article 4
of the Lease, except that (a) Tenant's Pro Rata Share (as set
forth in Section 1N of the Lease) shall be 15.3%, (b) the
Operating Expenses Base (as set forth in Section 1L of the Lease)
shall be the actual Operating Expenses for the calendar year of
2001 and (c) the Tax Base (as set forth in Section 1M of the
Lease) shall be the actual Taxes for the calendar year of 2001.
There shall be no abatement of Monthly Rent or Additional Rent
due under the Lease, as amended hereby, on account of this
Amendment.

     C.   Effective as of June 1, 2001, the fourth (4th)
grammatical paragraph of Section 4A of the Lease shall be deleted
and the following shall be inserted in lieu thereof:

                              2

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          "Notwithstanding anything to the contrary contained
          herein, and solely for the benefit of Tenant and not
          for the benefit of any other tenant or third-party,
          Operating Expenses for any Lease Year (the "Applicable
          Lease Year"), commencing with the Lease Year of 2002,
          shall not exceed an amount determined by increasing
          Operating Expenses for the Lease Year of 2001 at the
          rate of seven percent (7%) per year compounded through
          the Applicable Lease Year. For purposes of the
          foregoing cap on increases in Operating Expenses,
          amounts attributable to utilities and insurance shall
          not be included in the definition of Operating
          Expenses."

7.   PARKING SPACES.  Effective as of June 1, 2001, Section 1Q of
the Lease shall be deleted and the following shall be inserted in
lieu thereof:

     "Q.  Parking Spaces / Fees:  Subject to the terms of Article
     26, Tenant shall have the right to use up to 103 unreserved
     parking spaces, on a "first-come, first-served basis",
     without payment of a parking fee during the Term."

8.   RIGHT OF FIRST REFUSAL.  Effective as of the date of this
Amendment, the Right of First Refusal set forth in Exhibit G to
the Lease is deleted and the following right of first offer is
hereby granted in lieu thereof:

     A.   If at any time during the Term prior to April 1, 2004
any space on the ninth (9th) or tenth (10th) floors of the
Building (the "First Notice Space") is available for lease and
Landlord receives a bona fide expression of interest in the First
Notice Space from a prospective tenant,  Landlord shall deliver a
notice ("Landlord's Notice") to Tenant offering to lease the
First Notice Space to Tenant.  Landlord's notice must specify the
First Notice Rate (defined below).  The term "available for
lease" means that the First Notice Space is vacant and not then
subject to any existing rights of third parties, including,
without limitation, rights of first notice, expansion rights,
extension rights, options to lease, or other rights.

     B.   Tenant may elect to lease the applicable First Notice
Space by delivering a notice (the "Response Notice") to Landlord
within seven (7) business days after the date of Landlord's
notice specifying that Tenant elects either (a) to lease all, but
not less than all, of such First Notice Space or (b) to decline
to lease the First Notice Space.

     C.   If  (a) Landlord does not receive the Response Notice
within the aforementioned  seven (7) business day period or (b)
in the Response Notice Tenant does not elect to lease all of the
applicable First Notice  Space, Tenant is deemed to waive its
right to lease the applicable First Notice Space and Tenant has
no further rights under this Section, subject to subsection (H),
below.

     D.   If Tenant timely delivers a Response Notice electing to
lease all of the applicable First Notice Space, Tenant's lease of
such First Notice Space shall commence on the date specified in
Landlord's Notice and shall be on the same terms as the Lease, as
amended, except that the Rent and other applicable terms for the
First Notice Space shall be adjusted based on the First Notice
Rate.  Landlord shall prepare, and Landlord and Tenant will
execute and deliver to each other, within thirty (30) days after
Landlord's receipt of the Response Notice, an amendment to the
Lease adding the First Notice Space to the Premises upon the
terms specified in this Paragraph 7.  In the event Tenant fails
to sign such amendment to the Lease within said thirty (30) day
period, time being of the essence, then Landlord shall be
entitled to proceed to lease the applicable First Notice Space to
a third party free and clear of such right and such right shall
be deemed terminated with respect to the First Notice Space
described in Landlord's Notice.

                              3

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     E.   Landlord is not obligated to offer the First Notice
Space to Tenant, and Tenant may not exercise its option to lease
the First Notice Space, if at the time Landlord would otherwise
be obligated to give Landlord's Notice to Tenant, Tenant is in
default under the Lease, as hereby amended.

     F.   The term "First Notice Rate" means the Monthly Rent,
Additional Rent, and any tenant concessions that Landlord quotes
in Landlord's Notice for the First Notice Space (as determined by
Landlord in its sole discretion) for a term equal to the
remainder of the Term.

     G.   Tenant may not assign this right of first notice to any
assignee of the Lease, nor may any sublessee or assignee exercise
this option.

     H.   If Tenant is deemed to waive its option to lease any
First Notice Space under subsection 8(C), above, and Landlord
does not lease such First Notice Space to another tenant within
180 days after the date of the Response Notice, Landlord must
again offer such First Notice Space to Tenant under this
Paragraph before leasing such First Notice Space to any other
tenant.

9.   INSURANCE.  Effective as of the date of this Amendment,
Section 8A of the Lease is amended by deleting subsection (ii) in
the first paragraph thereof, requiring Tenant to maintain
business interruption insurance.

10.  CASUALTY DAMAGE.  Effective as of the date of this
Amendment, Section 10G of the Lease is amended by inserting the
following at the end thereof:

"In the event of damage to the Premises which Landlord elects to
repair, if Landlord fails to substantially complete said repair
within 270 days after the date of casualty (which 270-day period
shall be extended by one day for each day said repair is delayed
due to acts of Tenant or any event described in Article 25),
Tenant may terminate this Lease by written notice to Landlord
within thirty (30) days after such 270-day period (as permissibly
extended as aforesaid). Tenant's termination right and the rental
abatement set forth above shall be Tenant's sole remedies and
Landlord's sole liability for delays in completion of said
repairs."

11.  SUBLETTING AND ASSIGNMENT.  Effective as of the date of this
Amendment Section 16(1) of the Lease is amended by inserting the
phrase ", which consent shall not be unreasonably withheld,"
between the words "tenant" and "provided" in the first (1st)
sentence thereof;

12.  SUBORDINATION, ATTORNMENT AND MORTGAGEE PROTECTION.
Effective as of the date of this Amendment, Article 17 of the
Lease is amended by inserting the following at the end thereof:

     "Notwithstanding the above, Landlord agrees that Tenant's
     subordination to a Mortgage hereafter placed upon the
     Building shall be conditioned upon Tenants receipt from the
     applicable Lender, a written subordination and non-
     disturbance agreement for the benefit of Tenant.  Said
     subordination and non-disturbance agreement shall be in the
     Lender's standard form and shall provide, among other
     provisions, that so long as this Lease shall be in full
     force and effect that in the event it should become
     necessary to foreclose the Mortgage, the Lender thereunder
     will not join Tenant in summary or foreclosure proceedings
     or otherwise disturb Tenant's possession of the Premises
     pursuant to this Lease, so long as Tenant is not in default
     under any of the terms, covenants or conditions of this
     Lease."

                              4

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13.  REMEDIES OF LANDLORD.  Effective as of the date of this
Amendment:

     A.   Section 20(a) of the Lease is amended by inserting the
       phrase "and during the continuation thereof," between the words
       "period," and "Landlord" in the first (1st) sentence thereof;

     B.   Section 20(b) of the Lease is amended by deleting the phrase
       "with or without legal process" and inserting the phrase "after
       the due exercise of legal process" in lieu thereof; and

     C.   The first sentence of Section 20(c)(ii) of the Lease is
       deleted and the following is hereby inserted in lieu thereof:

          "Landlord shall use commercially reasonable efforts to
          relet the Premises or any part thereof for a term or
          terms which may at Landlord's option be less than or
          exceed the period which would otherwise have
          constituted the balance of the Term and may grant such
          concessions in reletting as Landlord, in the exercise
          of its reasonable business judgment, deems desirable,
          provided, however, that Landlord shall not be obligated
          to relet or attempt to relet the Premises on a priority
          basis over other vacant or unleased space in the
          Building."

14.  NOTICES.  Effective as of the date of this Amendment,
Section 30C of the Lease is amended to provide that notices to
Landlord shall be addressed as follows:

     c/o Cornerstone Real Estate Advisers, Inc.
     311 South Wacker Drive, Suite 980
     Chicago, Illinois 60606

     with a copy to:

     Transwestern Commercial Services, Attn: Building Manager
     101 East Park Blvd.
     Plano, Texas 75074

or at such other or additional addresses as Landlord may
hereafter notify Tenant.

15.  BROKER.  Tenant represents that except for Transwestern
Commercial Services and Jackson & Cooksey (collectively, the
"Brokers"), Tenant has not dealt with any real estate broker,
salesperson or finder in connection with this Amendment, and no
such person initiated or participated in the negotiation of this
Amendment.  Tenant agrees to indemnify, defend and hold Landlord,
its property manager and their respective employees harmless from
and against all claims, demands, actions, liabilities, damages,
costs and expenses (including, attorneys' fees) arising from
either (i) a claim for a fee or commission made by any broker,
other than the Brokers, claiming to have acted by or on behalf of
Tenant in connection with this Amendment, or (ii) a claim of, or
right to, lien under the Statutes of Texas relating to real
estate broker liens with respect to any such broker retained by
Tenant.

16.  BINDING EFFECT.  The Lease, as amended hereby, shall
continue in full force and effect, subject to the terms and
provisions thereof and hereof.  In the event of any conflict
between the terms of the Lease and the terms of this Amendment,
the terms of this Amendment shall control.  This Amendment shall
be binding upon and inure to the benefit of Landlord, Tenant and
their respective successors and permitted assigns.

                              5

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17.  SUBMISSION.  Submission of this Amendment by Landlord to
Tenant for examination and/or execution shall not in any manner
bind Landlord and no obligations on Landlord shall arise under
this Amendment unless and until this Amendment is fully signed
and delivered by Landlord and Tenant; provided, however, the
execution and delivery by Tenant of this Amendment to Landlord
shall constitute an irrevocable offer by Tenant to enter into the
transactions described herein, which offer may not be revoked for
thirty (30) days after such delivery.

18.  LIMITATION OF LIABILITY.  Neither Landlord nor any principal
of Landlord nor any owner of the Building, whether disclosed or
undisclosed, shall have any personal liability with respect to
any of the provisions of the Lease, as amended hereby, or the
Premises, and if Landlord is in breach or default with respect to
Landlord's obligations under the Lease, as amended hereby, or
otherwise, Tenant shall look solely to the equity interest of
Landlord in the Building for the satisfaction of Tenant's
remedies or judgments.

                    [SIGNATURE PAGE FOLLOWS]

                              6

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     IN WITNESS WHEREOF, and intending to be legally bound
hereby, the parties have duly executed the Amendment with the
Exhibit attached hereto, as of this 2nd day of March, 2001.

                                   Landlord:
                                   --------

                                   CORNERSTONE SUBURBAN OFFICE,
                                   L.P., a Delaware limited
                                   partnership

                                   By:  Cornerstone Office
                                        Management, Limited
                                        Liability Company, a
                                        Delaware limited
                                        liability company, its
                                        general partner

                                        By:  CORNERSTONE REAL
                                             ESTATE ADVISERS,
                                             INC., its managing
                                             member

                                             By:  /s/ Robert White
                                                  ----------------
                                             Title: Vice President

                                   Tenant:
                                   ------

                                   ANTRIM CORPORATION, a Texas
                                   corporation

                                   By:  /s/ Nina M. Dmetruk
                                        -------------------
                                   Title:  Secretary

                              7<PAGE>

                                                                  EXHIBIT 10.6.2

                                  Transition
                                   Agreement

                                Natus, Eurotec,
                           Wakayama, Kuroiwa, Tomita

                                 July 28, 2000

Confidential treatment has been requested for portions of this exhibit. The copy
filed herewith omits the information subject to the confidentiality request.
Omissions are designated as [***]. A complete version of this exhibit has been
filed separately with the Securities and Exchange Commission.
<PAGE>

                                   AGREEMENT

      THIS AGREEMENT ("Agreement") is effective July 28, 2000, and is made and
entered into by, among and between:

      Natus Medical, Inc. a California corporation having is principal place of
business at 1501 Industrial Road, San Carlos, CA, 94070 ("Natus");

      Toshibumi Wakayama ("Wakayama"), acting personally, and in his capacity as
President and Managing Director of Nippon Eurotec Co., Ltd. ("Eurotec"), a
limited liability corporation under the laws of Japan having its principal place
of business at Akasaka Daiichi Building, 9-17, Akasaka 4-Chome, Minato-Ku,
Tokyo, 107, Japan;

      Masaaki Kuroiwa ("Kuroiwa"), an employee of Eurotec who is acting herein
in his personal capacity; and

      Kenji Tomita ("Tomita"), an employee of Eurotec who is acting herein in
his personal capacity.

RECITALS:

      WHEREAS, Natus and Nippon Eurotec are parties to an agreement dated June
11, 1997, pursuant to which Natus has appointed Eurotec as exclusive distributor
for designated Natus products in Japan ("Natus Products"), which such agreement
expires by its terms on June 10, 2001 ("Distribution Agreement"; Exhibit A
hereto);

      WHEREAS, Wakayama, Tomita and Kuroiwa, have established a highly cordial
and successful working relationship with Natus, based on mutual trust, and would
like to continue to work in some capacity to support sales and distribution of
the Natus Products despite termination of the Distribution Agreement on June 10,
2001;

      WHEREAS, the parties agree that in order to continue the successful sales
and distribution of the Natus Products in Japan after June 10, 2001
("Distribution Agreement Expiration Date"), Natus should establish a wholly-
owned subsidiary Natus Japan K.K., ("NJKK"), and that Wakayama, Kuroiwa, and
Tomita should serve as members of the Board of Directors and, in the future, as
employees, of NJKK, and in this manner continue their personal involvement in
the sales of Natus Products, and to do so pursuant to these terms;

      WHEREAS, the parties agree that in order to assure and to accomplish the
smooth transition from Eurotec to NJKK of the Natus Products sales and
distribution business in Japan, and the personal involvement of Wakayama, Tomita
and Kuroiwa, it will be helpful to set forth in writing those terms already
discussed and agreed upon by the parties during the amicable and mutually
cooperative discussions held to date.
<PAGE>

          NOW, THEREFORE, based on the foregoing premises and on the mutual
promises contained in this Agreement, the parties hereto agree as follows:

          1.  Distribution Agreement Reaffirmed

              1.1  The parties acknowledge and agree that this Agreement is not
in intended to, and shall not, modify or amend the terms of the Distribution
Agreement. The parties further reaffirm their commitment to the terms of the
Distribution Agreement including, among other terms, those pertaining to the
performance by Natus and by Eurotec through June 10, 2001. The parties further
agree that this Agreement is not intended to interfere with or interrupt
Eurotec's and Natus' business with respect to sales and distribution of the
specified Natus products pursuant to the Distribution Agreement.

          2.  Transition of Natus Products Business to Natus Japan K.K.

              2.1  Natus Japan K.K. The parties hereby acknowledge the
incorporation of Natus Japan K.K., a wholly-owned subsidiary of Natus duly
incorporated as a limited liability company under the laws of Japan. The parties
agree to carry out the smooth transition to NJKK of the Natus Products business
in Japan currently being handled by Eurotec, and to do so according to the
timetable specified in Exhibit B hereto and to the other terms of this
Agreement.

              2.2  Transition Details, Schedule. The parties agree to exert
their best efforts to accomplish the transfer of the Natus Products business to
NJKK according to the time table in Exhibit B, which transition is to be
completed by no later than July 1, 2001. In preparation for this transition,
Wakayama shall present to Natus a list compiling all items (tangible as well as
intangible) used by Eurotec in connection with the Natus Products business,
together with Wakayama's advice as to which such items are necessary or helpful
to NJKK as NJKK assumes the Natus Products business. Natus shall make the final
determination as to which such items shall be assumed by NJKK. At this time, the
parties contemplate that Eurotec shall transfer to NKJJ, and NJKK shall assume,
the following items:

                   2.2.1  Natus Products regulatory approvals (Shonin; Kyoka;
others); customer data in all forms including and electronic and hard-copy;
advertising and marketing materials in all forms including electronic and hard-
copy; accounts opened or maintained with advertisers, consultants, customers,
resellers, leasing companies, and the like, with respect to marketing, sales,
distribution or purchasing, leasing or servicing Natus Products; all technical
data developed or maintained by Eurotec related to Natus Products; all
information in whatever format related to marketing, clinical studies, and the
like, developed or maintained by Eurotec regarding Natus Products; and such
other items as are determined by the parties according to these terms. In
connection with the transfer of Shonin to NJKK, the parties acknowledge and
affirm their intent to apply the reimbursement formula in section 3.6.4 of the
Distribution Agreement. In addition, NJKK shall bear the MHW fees charged to
transfer the Shonin to NJKK.

                   2.2.2  NJKK shall also evaluate and assess the prospects of
hiring current Eurotec employees involved in the Natus Products business, and in
this connection shall obtain the cooperation and assistance of Wakayama to
review such employee's performance,

                                      -2-
<PAGE>

credentials, employment history, etc. Final determination on any NJKK employment
matter shall be made by the President of NJKK. Eurotec shall fully release such
employees who are hired by NJKK, and NJKK shall be indemnified and help harmless
by Eurotec with respect to matters arising from their employment by Eurotec
including payments for insurance, retirement, social benefits, and the like.

          2.3  Business Plan: NJKK President.  The parties agree to work
together to establish a definitive business plan for NJKK, and to recruit and
hire a highly competent operating president for NJKK.

          2.4  Asahi Chemical Relationship.  The parties acknowledge the current
sub-distributorship between Eurotec and Asahi Chemical Ltd., and as well the
highly important role played by Asahi in connection with the Natus Products
business.  The parties agree to exert their strongest and best faith efforts to
continue to conduct their affairs so as to promote the strongest possible
business relationship with Asahi through the Distribution Agreement Expiration
Date, and to promote and facilitate a relationship between NJKK and Asahi on the
most productive terms possible after that date.

      3.  Matters Pertaining to Wakayama

          3.1  Natus Medical Inc. Stock Options.  Natus hereby offers Wakayama,
and Wakayama accepts such offer, the option to purchase 50,000 (fifty thousand)
shares of Natus Common Stock, at an option price of $4.00 per share, pursuant to
the terms of the Natus Medical Inc. 1991 Stock Plan (as amended) (attached as
Exhibit C). Wakayama's right to exercise such Stock Options and to purchase
Natus shares vests according to the following schedule:

          20,000 shares vesting one year after date of incorporation of Natus
Japan K.K.;

          15,000 shares vesting one year thereafter; and

          15,000 shares vesting one year thereafter.

          3.2   Member of the Board of Directors and Chairman of Natus Japan K.
K.  Natus hereby appoints Wakayama to the Board of Directors of Natus Japan
K.K., and with this appointment, the title of Chairman (in Japanese, "Kaicho"),
and Wakayama accepts such appointment.  The term of Wakayama's appointment is
effectively immediately and continues until Natus shall appoint Wakayama's
successor or replacement.

                3.2.1 As Director, Wakayama agrees to take actions consistent
with the instructions of Natus or NJKK, and to refrain from taking actions that
are inconsistent with such instructions, as well as to vote as Director
according to Natus' instructions, and to this end to enter into written
agreement with Natus and with NJKK which shall be binding on Wakayama to the
extent permissible under Japanese law. Wakayama shall sign and be bound by the
Natus Confidentiality and Non-Competition Agreement attached hereto as Exhibit
E.

           3.3.   Employment from July 1, 2001.  NJKK offers to employ Wakayama
from July 1, 2001, to perform the duties, and to pay the salary and to allocate
the budget, as set forth below, and Wakayama accepts such offer:

                                      -3-

<PAGE>

                  3.3.1 Duties: Wakayama shall work at least half-time for NJKK,
and shall be responsible for lobbying towards UNHS, helping create and implement
strategies in marketing Natus Products, serve as an idea generator for NJKK,
inspire and magnetize the staff of NJKK, make him self available from time to
time to work on other Natus international marketing efforts, and in general,
shall support to the fullest extent of his ability, the activities of NJKK.
Wakayama shall not be required to regularly attend the NJKK office in performing
these duties, it being understood that Wakayama will continue to use his office
at Eurotec while performing these duties for NJKK. Wakayama shall report
regularly to the President and to the Board of Directors of NJKK, and his
continued employment by NJKK is subject at all times to the discretion of the
Board of Directors of NJKK.

                  3.3.2 Wakayama Salary and Budget. NJKK shall allocate annually
a maximum of Yen [***] as salary and expense budget for Wakayama. Wakayama in
coordination with NJKK's accountants shall apportion such Yen [***] between his
personal salary, and NJKK's expense budget in connection with lobbying and
government relations efforts towards UNHS. Such apportionment shall be made
prior to July 1, 2001 for the following year, and annually each year thereafter
during the term of Wakayama's employment. Amounts apportioned to Wakayama's
salary shall be paid monthly by NJKK as ordinary payroll, and Wakayama solely
shall be responsible for personal taxation at the national, prefectural, or
local levels on such compensation amounts. Amounts expended on lobbying and
government relations activities shall be properly receipted, and such amounts
shall be used solely towards promotion of Natus Products and not for any other
purpose.

             3.4  Payment of Lobbying Fees.  Natus hereby offers Wakayama, and
Wakayama accepts, an Annual UNHS Lobbying Bonus for "Major Areas" (as set forth
in Exhibit D) adopting UNHS before March 31, 2004, to be awarded according to
these terms:

                  3.4.1  Natus will compensate Wakayama US$[***] for each
Major Area in Japan adopting UNHS, provided that:

              (a)  Nippon Eurotec (prior to 6/30/01) or Natus Japan K.K. (after
7/101) must have met its combined ALGO 2eC and Portable minimum purchase
commitments from Natus for the year during which such Major Area adopts UNHS
("Total Minimum Annual Sales Value").

              (b)  If the Total Minimum Annual Sales Value for any year was not
achieved, then the Lobbying Bonus will be pro-rated according to the chart
below.

              (c)  For Major Areas adopting UNHS before 7/1/01, the Total
Minimum Annual Sales Value shall be equal to the value of Natus ALGO 2eC and
Portables that Nippon Eurotec has committed to purchasing through 6/30/01.

              (d)  Natus shall pay the Annual UNHS Lobbying Bonus for up to ten
Major Areas adopting UNHS before 3/31/04, based on the Calculation Method below:

                                      -4-

__________
[***] Confidential treatment requested pursuant to a request for confidential
treatment filed with the Securities and Exchange Commission. Omitted portions
have been filed separately with the Commission.
<PAGE>

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------
 Annual UNHS Lobbying Bonus Calculation Method for Major Areas Adopting UNHS Before 3/31/04
---------------------------------------------------------------------------------------------
<S>                         <C>                          <C>
"Total Minimum Annual       If:                          Then:
 Sales Value" (to Natus)
 of ALGO 2eC & Portable     The percentage of "Total     The following formula is used to
 by Year (Yr 1 Ending       Minimum Annual Sales         Calculate Annual UNHS Lobbying
 6/30/02):                  Value" Actually Achieved     Bonus to be Paid for Major Areas
                            by  Year End (Total $        adopting UNHS during that year:
                            Value Algo2eC & Portable)
7/00-6/01: To be determined is:
Yr 1: [***]: $[***]         -----------------------------------------------------------------
Yr 2: [***]: $[***]         100%   or more               $[***] X [***] X No. of Major Areas
Yr 3: [***]: $[***]                                      adopting UNHS that year
                            -----------------------------------------------------------------
                            90-99%      "       "        $[***] X [***] X No. of Major Areas
                                                         adopting UNHS that year
                            -----------------------------------------------------------------
                            75-89%      "       "        $[***] X [***] X No. of Major Areas
                                                         adopting UNHS that year
                            -----------------------------------------------------------------
                            50-74%      "       "        $[***] X [***] X No. of Major Areas
                                                         adopting UNHS that year
                            -----------------------------------------------------------------
                            0-49%       "       "        $[***] X [***] X No. of Major Areas
                                                         adopting UNHS that year
---------------------------------------------------------------------------------------------
</TABLE>

          3.4.2. By way of example and not of limitation:

          (a)    Example: If Saitama is the only Major Area that adopts UNHS
by 6/31/01, Wakayama (or Eurotec, as determined by Wakayama) will then receive
an Annual Lobbying Bonus of $[***] multiplied by the formula in Column 3,
above, based on the actual percentage achieved of Eurotec's Total Minimum Annual
Sales Value through 6/30/01.

          (b)    Example: Five Major Areas adopt UNHS between 7/1/01 and
6/30/02, and Natus sells more than $[***] of Algo 2eC and Portables to NJKK
during that period. Therefore, $[***] Annual UNHS Lobbying Bonus is to be
paid by Natus for that year ending 6/30/02.

          (c)    Further Example: Five Major Areas adopt UNHS between 7/1/02
and 6/30/03, and Natus sells more than $[***] of Algo 2eC and Portables to
NJKK during that period. Therefore, $[***] Annual UNHS Lobbying Bonus is
to be paid by Natus for that year ending 6/30/03.

          3.4.3  The maximum cumulative Annual UNHS Lobbying Bonus payments to
be made by Natus pursuant to this Agreement is US$[***] representing the
cumulative total possible bonus payments for ten Major Areas adopting UNHS
before March 31,

                                      -5-

__________
[***] Confidential treatment requested pursuant to a request for confidential
treatment filed with the Securities and Exchange Commission. Omitted portions
have been filed separately with the Commission.
<PAGE>

2003, and when during each year in which any Major Area adopted UNHS the Total
Minimum Annual Sales Value has been achieved.

               3.4.4  For purposes of this bonus, the parties agree to define
Major Areas as the prefectures, cities and districts listed in Exhibit D hereto.
The parties agree to define "adopting UNHS" to mean written legislative or
administrative action by the highest government body in any Major Area that
mandates universal hearing screening of babies born in that Major Area and that
establishes a reimbursement scheme that complies with the MHW rules regarding
reimbursement for UNHS .

          3.5  Commission Bonus on Exceeding Sales Objectives.  Natus hereby
offers to pay to Eurotec or to Wakayama, and Wakayama accepts, a bonus as
follows:

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------
     Year
   (1 July-                    Algo2eC                             Algo Portable
   30 June)
----------------------------------------------------------------------------------------
   <C>          <S>                                     <C>

   2001-02      For purchases from Natus of [***] or    On purchase from Natus of more
                more units: $[***] per unit on units    than [***] units: $[***] per
                number [***] and higher                 unit on units [***] and higher
----------------------------------------------------------------------------------------
   2002-03      For purchases from Natus of [***] or    On purchase from Natus of more
                more units: $[***] per unit on units    than [***] units: $[***] per
                number [***] and higher                 unit on units [***] and higher
----------------------------------------------------------------------------------------
   2003-04      For purchases from Natus of [***] or    On purchase from Natus of more
                more units: $[***] per unit on units    than [***] units: $[***] per
                number [***] and higher                 unit on units [***] and higher
-----------------------------------------------------------------------------------------
</TABLE>

               3.5.1  These bonus commission amounts are payable by Natus by the
end of the first quarter after the completion of each respective year.

               3.5.2  Natus is prepared to make the payments described in 3.4
and 3.5, above, either directly to Wakayama or to Nippon Eurotec, based on
Wakayama's discretion. If such payments are paid to Nippon Eurotec, the parties
understand that there may be requisite written agreement between Nippon Eurotec
and NJKK, but in no event shall any such payment or the need for any such
written agreement be interpreted as extending or continuing the Distribution
Agreement. Notwithstanding the foregoing, the activities described herein
Wakayama's employment and UNHS lobbying efforts are acknowledged by the parties
to personal services and must be performed by Wakayama personally, and cannot be
assigned or delegated to anyone whether an employee of Eurotec or otherwise:

          3.6  Other Details.  Natus expects to work with you to terminate or
transition your agreement with Asahi as we may determine is in the best
interests of NJKK, and in this connection, we expect that you will conduct
Eurotec's affairs with Asahi in a manner that will promote a strong relationship
with Asahi and NJKK after 6/31/01.

          In exchange for the payments to be made to you, Natus assumes your
highest level of cooperation and assistance in transferring the Algo business to
Natus Japan K.K. over a

                                      -6-

__________
[***] Confidential treatment requested pursuant to a request for confidential
treatment filed with the Securities and Exchange Commission. Omitted portions
have been filed separately with the Commission.
<PAGE>

schedule to be mutually determined, but to be substantially completed by July 1,
2001. This would include the customer data, leasehold if suitable for NJKK,
advertising and marketing materials, Shonin and all technical data on Natus
products, and the like. Natus would expect effective on that date to receive a
full release by all parties and individuals involved with the earlier Natus-
Nippon EUROTEC business, including Eurotec, its officers, directors and
shareholders, and Asahi.

          4.  Matters Pertaining to Tomita.

              4.1  Natus Medical Inc. Stock Options. Natus hereby offers Tomita,
and Tomita hereby accepts, the option to purchase 10,000 (ten thousand) shares
of Natus Common Stock, at an option price of $4.00 per share, pursuant to the
terms of the Natus Medical Inc. 1991 Stock Plan (as amended) (attached as
Exhibit C). Tomita's right to exercise such Stock Options and to purchase Natus
shares vests according to the following schedule:

          5,000 shares vesting one year after date of incorporation of Natus
Japan K.K.; and

          5,000 shares vesting one year thereafter.

              4.2  Member of the Board of Directors of Natus Japan K. K. Natus
hereby appoints Tomita to the Board of Directors of Natus Japan K.K., and Tomita
hereby accepts such appointment. The term of Tomita's appointment is effectively
immediately and continues until Natus shall appoint his successor or
replacement.

                   4.2.1 As Director, Tomita agrees to take actions consistent
with the instructions of Natus or NJKK, and to refrain from taking actions that
are inconsistent with such instructions, as well as to vote as Director
according to Natus' instructions, and to this end to enter into written
agreement with Natus and with NJKK which shall be binding on Tomita to the
extent permissible under Japanese law. Tomita shall sign and be bound by the
Natus Confidentiality and Non-Competition Agreement attached hereto as Exhibit
E.

              4.3  Employment from July 1, 2001. Natus acknowledges Tomita's
resignation for Eurotec on June 30, 2001, and NJKK hereby offers to employ
Tomita starting July 1, 2001, to perform the duties and to pay the salary as set
forth below, and Tomita hereby accepts such offer:

                   4.3.1  Duties. Tomita shall perform the duties of General
Manager, Sales (in Japanese, "bucho"). Tomita shall also perform the duties of
Technical Services Manager ("shurii sekinin gijitsusha"). Tomita shall also
perform the duties of MHW Responsible Technician (in Japanese, "sekinin
gijitsunin"). As Sales General Manager, Tomita shall be responsible for setting
and meeting quarterly, semi-annual, and annual sales goals. Tomita shall be
responsible for hiring, training, motivating, terminating, and otherwise
managing, the NJKK sales staff as well as the outside sales representatives.
Tomita shall perform his duties on a full-time basis, and shall have such
additional duties as may be determined by the President of NJKK.

                                      -7-

<PAGE>

              4.3.2  Compensation. Tomita shall receive as compensation an
amount no less then his current compensation from Eurotec, which is represented
to be annually Yen [***]. Tomita shall be eligible for bonuses, salary increases
and other incentive awards that are adopted by NJKK and made available to other
management members. Tomita shall work under the direction of, and shall report
to, the President of NJKK, and his continued employment by NJKK is subject at
all times to the discretion of the Board of Directors of NJKK.

     5.  Matters Pertaining to Kuroiwa.

         5.1  Natus Medical Inc. Stock Options. Natus hereby offers Kuroiwa, and
Kuroiwa hereby accepts, the option to purchase 10,000 (ten thousand) shares of
Natus Common Stock, at an option price of $4.00 per share, pursuant to the terms
of the Natus Medical Inc. 1991 Stock Plan (as amended) (attached as Exhibit C).
Kuroiwa's right to exercise such Stock Options and to purchase Natus shares
vests according to the following schedule:

     5,000 shares vesting one year after date of incorporation of Natus Japan
K.K.; and

     5,000 shares vesting one year thereafter.

         5.2  Member of the Board of Directors of Natus Japan K. K. Natus hereby
appoints Kuroiwa to the Board of Directors of Natus Japan K.K., and Kuroiwa
hereby accepts such appointment. The term of Kuroiwa's appointment is
effectively immediately and continues until Natus shall appoint his successor or
replacement.

              5.2.1 As Director, Kuroiwa agrees to take actions consistent with
the instructions of Natus or NJKK, and to refrain from taking actions that are
inconsistent with such instructions, as well as to vote as Director according to
Natus' instructions, and to this end to enter into written agreement with Natus
and with NJKK which shall be binding on Kuroiwa to the extent permissible under
Japanese law. Kuroiwa shall sign and be bound by the Natus Confidentiality and
Non-Competition Agreement attached hereto as Exhibit E.

         5.3  Employment from July 1, 2001.  Natus acknowledges Kuroiwa's
resignation for Eurotec on June 30, 2001, and NJKK hereby offers to employ
Kuroiwa starting July 1, 20001, to perform the duties and to pay the salary as
set forth below, and Kuroiwa hereby accepts such offer:

              5.3.1  Duties. Kuroiwa shall be General Manager (in Japanese
"bucho") for new product development, for regulatory affairs, as well as
Clinical Advisor Program Manager, and Intervention Program Relationship Manager.
Kuroiwa shall be responsible for developing a program, and for successfully
conducting the program, for device approvals, Good Manufacturing
Practices/Importer Approvals, and all other matters pertaining to obtaining
government or regulatory approvals of Natus Products, NJKK or its facilities,
licenses, etc. As Clinical Advisor Program Manager, Kuroiwa shall be responsible
for successful creation, and implementation, of the CA Program in Japan. As
Intervention Program Relationships Manager Kuroiwa shall be responsible for
liaison with the Dr. Tanaka Institute, and shall create and manage a program to
successfully coordinate the activities of the Tanaka Institute with those of

                                      -8-

__________
[***] Confidential treatment requested pursuant to a request for confidential
treatment filed with the Securities and Exchange Commission. Omitted portions
have been filed separately with the Commission.
<PAGE>

NJKK to maximize the sales of Natus Products. Kuroiwa shall perform his duties
on a full-time basis and in a highly competent and professional manner.

              5.3.2  Compensation. As compensation, Kuroiwa shall receive as
compensation an amount no less then his current compensation from Eurotec, which
is represented to be annually Yen [***], and shall be eligible for bonuses,
raises and other incentive awards that may be adopted by NJKK and made available
to other management members of NJKK. Kuroiwa shall report to and be supervised
by the President of NJKK, and his continued employment by NJKK is subject at all
times to the discretion of the Board of Directors of NJKK.

     6.  Additional Undertakings.

         6.1  Consent of Eurotec to this Agreement.

              6.1.1  Indemnification by Eurotec of Wakayama, Tomita, Kuroiwa and
Natus. The offers by Natus made hereunder, and accepted by Wakayama, Kuroiwa and
Tomita, and the other promises exchanged hereunder, are exchanged with the full
knowledge and consent of Wakayama as controlling shareholder, Representative
Director and President of Eurotec, and as a result Eurotec and its directors,
officers, agents, assigns and shareholders (collectively in this paragraph only,
referred to as "Eurotec") shall indemnify and hold harmless Natus and NJKK and
any of their officers, directors, shareholders, agents and employees from and
against any and all claims, demands, disputes, complaints, actions, suits,
liabilities and damages (including attorney fees and costs) of any kind to the
extent that any such claim, demand, etc., may relate to or arise from (a)
Wakayama's, Tomita's or Kuroiwa's services as employee or Director of Eurotec,
or (b) any actions taken by the parties in performance of the promises made in
this Agreement (herein collectively referred to as "Claim"). Eurotec further
agrees, at its sole cost and expense, to release, defend (at Natus or NJKK's
option), indemnify, and hold harmless Natus and NJKK, their directors, officers,
agents, employees, and shareholders from and against all such Claims. Without
limiting the generality of the foregoing, Eurotec's duty to release, defend,
indemnify, and hold harmless shall specifically include those Claims arising
from (a) the employment relationship between NJKK and Wakayama, Tomita and
Kuroiwa, or service by them as members of the Board of Directors of NJKK,
including any compensation offered or paid to them hereunder; (b) Eurotec's
status as Wakayama's, Tomita's or Kuroiwa's employer, including (but not limited
to) all Claims by Eurotec based on loss of personal services, lost or diminished
business opportunity, or usurpation of business opportunity, and the like, as a
result of the actions contemplated hereunder; or (c) the transfer hereunder of
the Natus Product business to NJKK.

              6.1.2 No Payments to Eurotec. It is understood, acknowledged and
agreed by the parties that no payments shall be made, nor shall any be claimed
due or owing, to Nippon Eurotec, Ltd., as a result of the termination of the
Distribution Agreement nor as a result of any action contemplated by this
Agreement to be taken by the parties, it being clearly understood that, as
stated in the Distribution Agreement, there shall be no liability for
termination of the Distribution Agreement pursuant to its terms.

                                      -9-

__________
[***] Confidential treatment requested pursuant to a request for confidential
treatment filed with the Securities and Exchange Commission. Omitted portions
have been filed separately with the Commission.
<PAGE>

     7.  General Terms.

         7.1  Cooperation.  Each of the parties hereto shall use its reasonable
efforts to take or cause to be taken all actions, to cooperate with the other
party hereto, with respect to all actions, and to do or cause to be done all
things necessary, proper or advisable to consummate and make effective the
transactions contemplated by this Agreement.

         7.2  Waiver. Any failure of Wakayama, Tomita or Kuroiwa to comply with
any obligations or agreements herein contained to be performed by any such party
may be waived only in writing by Natus.

         7.3 Notices. All notices and other communications hereunder shall be in
writing and shall be deemed to have been duly given upon receipt of: hand
delivery; certified or registered mail; return receipt requested; or telecopy
transmission with confirmation of receipt:

         (i)    If to Natus, to:

                Tim Johnson
                Natus Medical, Inc.
                1501 Industrial Road
                San Carlos, CA  94070
                Phone:  (800) 255-3901
                Fax:  (650) 802-0401

                (with a copy to)

                Mark Foster
                Law Offices of Mark Foster
                9615 SW Allen Blvd, Ste 103
                Portland, OR 97005
                Phone: (503) 643-0065
                Fax: (503) 643-6800

         (ii)   If to Wakayama, to:
                  Mr. Toshibumi Wakayama
                  Hakusan 5-6-15,  Bunkyo-ku, Tokyo, Japan
                  Postal code: 112-0001
                  Phone: 81-(0)3-3941-0865,  Fax: 81-(0)3-3941-5693
                  (No e-mail )

         (iii)  If to Kuroiwa, to:
                  Mr. Masaaki Kuroiwa
                  Sumiyoshidai 22-35, Aoba-ku, Yokohama, Japan
                  Postal code: 227-0035
                  Phone & Fax: 81-(0)45-960-1393
                  E-mail: mkuro@pop02.odn.ne.jp (home)

                                      -10-
<PAGE>

         (iv)  If to Tomita, to:
                  Mr. Kenji Tomita
                  Totsuka-cho 2730-31 , Totsuka-ku, Yokohama, Japan
                  Phone : 81-(0)45-865-5360  (No fax)
                  E-mail : CZB07140@nifty.ne.jp(home)

Such names and addresses may be changed by written notice to each person listed
above.

         7.4  Governing Law and Consent to Jurisdiction (Dispute Resolution)

         (a)  This Agreement shall be governed by and construed in accordance
with the internal substantial laws and not the choice of law rules of the State
of California, USA.

         (b)  Any judicial proceeding brought with respect to this Agreement
must be brought in any court of competent jurisdiction in the State of
California, and, by execution and delivery of this Agreement, each party (i)
accepts, generally and unconditionally, the exclusive jurisdiction of such
courts and any related appellate court, and irrevocably agrees to be bound by
any judgment rendered thereby in connection with this Agreement and (ii)
irrevocably waives any objection it may now or hereafter have as to the venue of
any such suit, action or proceeding brought in such a court or that such court
is an inconvenient forum.  THE PARTIES HEREBY WAIVE TRIAL BY JURY IN ANY
JUDICIAL PROCEEDING TO WHICH THEY ARE BOTH PARTIES INVOLVING, DIRECTLY OR
INDIRECTLY, ANY MATTER IN ANY WAY ARISING OUT OF, RELATED TO, OR CONNECTED WITH
THIS AGREEMENT.

         (c)  Any dispute, claim or controversy arising out of or relating to
this Agreement, or the interpretation or breach thereof, shall be referred to
arbitration under the rules of the American Arbitration Association, to the
extent such rules are not inconsistent with this Section.  Judgment upon the
award of the arbitrators may be entered in any court having jurisdiction thereof
or such court may be asked to judicially confirm the award and order its
enforcement, as the case may be.  The demand for arbitration shall be made
within a reasonable time after the claim, dispute or other matter in question
has arisen, and in any event shall not be made after the date when institution
of legal or equitable proceedings, based on such claim, dispute or other matter
in question, would be barred by the applicable statute of limitations.

         (d)  The arbitration panel shall consist of one arbitrator, who shall
be appointed by a representative of each party hereto.  The two representatives
thus appointed shall choose the arbitrator; PROVIDED, HOWEVER, that if, within
thirty days after the selection of the second of the two representatives, the
two representatives are unable to agree on the appointment of the arbitrator,
either representative may petition the American Arbitration Association to make
the appointment. The place of arbitration shall be San Francisco, California.

         7.5  Counterparts.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.

                                      -11-
<PAGE>

         7.6  Term and Termination.  This Agreement shall become effective on
the Effective Date and shall remain in force until July 1, 2001, (the
"Termination Date"), and on an effective the Termination Date this Agreement
shall terminate, provided that certain terms of this Agreement shall survive
termination pursuant to this section.

              7.6.1  Termination for Cause.  This Agreement shall be terminated
for cause:

         (i)  If the Eurotec Executives (or any of them) on one hand, or Natus
on the other, materially defaults in the performance of any provision of this
Agreement, then the non-defaulting party may give written notice to the
defaulting party that if the default is not cured within thirty (30) calendar
days, the Agreement will be terminated at the end of that period and such
termination shall not prejudice or limit either party's remedies; or

         (ii) Upon:

              (a)  the institution by or against Natus, or any of the Eurotec
Executives, of insolvency, receivership or bankruptcy proceedings or any other
proceedings for the settlement of its debts; or

              (b)  any party's making an assignment for the benefit of
creditors; or

              (c)  any party's death or incapacity, or the dissolution of Natus,
this Agreement shall terminate immediately without notice and shall be deemed to
have been terminated by the party not so affected and such termination shall not
prejudice or limit either party's remedies.

              7.6.2  Duties upon Termination.  Upon any termination or
expiration of this Agreement no party shall retain any copies of any
Confidential Information which may have been entrusted to.

              7.6.3  Survival.  The terms of this Agreement which by their
nature may survive the termination or expiration of this Agreement shall survive
the termination or expiration of this Agreement.

         7.7  Entire Agreement.  The section headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement. The Recitals form an integral part
of this Agreement. This Agreement, including the Exhibits and Schedules hereto
and the documents referred to herein, embodies the entire agreement and
understanding of the parties hereto in respect of the subject matter contained
herein. This Agreement supersedes all prior agreements and understandings
between the parties with respect to such subject matter.

         7.8  Amendment and Modification.  This Agreement may be amended or
modified only by written agreement of the parties hereto.

                                      -12-
<PAGE>

         7.9  Binding Effect; Benefits.  This Agreement shall inure to the
benefit of and be binding upon the parties hereto and their respective
successors and assigns; nothing in this Agreement, express or implied, is
intended to confer on any Person other than the parties hereto and their
respective successors and assigns any rights, remedies, obligations or
liabilities under or by reason of this Agreement.

         7.10  Assignability.  This Agreement shall not be assignable by
Wakayama, Tomita or Kuroiwa without the prior written consent of Natus. Natus
may assign its rights under the Agreement to any affiliate of Natus.

         7.11  Consents.  No consent required to be given under this Agreement
shall be unreasonably withheld.

         7.12  Counterparts.  This Agreement shall be prepared in two identical
and original counterparts and both of which together shall be one and the same
instrument and either of which may be used for purposes of proof.

         7.13  Cumulation of Remedies.  All remedies available to a party under
this Agreement are cumulative and may be exercised concurrently or separately,
and the exercise of any one remedy shall not be deemed an election of such
remedy to the exclusion of other remedies.

         7.14  Independent Parties.  Each party shall remain an independent
contractor and shall be responsible for compliance with all laws, rules and
regulations involving, but not limited to, employment of labor, hours of labor,
health and safety, working conditions and payment of wages. Each party shall
also be solely responsible for payment of taxes, including federal, state and
municipal taxes, chargeable or assessed with respect to its employees, such as
social security, unemployment, worker's compensation, liability insurance and
federal and state withholding. Neither party nor its employees, officers,
directors, or agents shall hold itself out as the agent, employee, legal
partner, or joint venturer of the party, and shall make no commitment or
engagement on the account of or on behalf of the other party.

         7.15  Force Majeure.  Nonperformance of either party shall be excused
to the extent that performance is rendered impossible by strike, fire, flood,
governmental acts, orders or restrictions, or any other reason where failure to
perform is beyond the control and not caused by the negligence of the
nonperforming party. In the event of any delay caused by such contingency, the
delayed party may defer any performance or delivery prevented by the Force
Majeure condition for a period equal to the time lost by reason of such delay,
provided, however, that the delayed party promptly commences and reasonably and
diligently pursues actions to cure or circumvent such cause. Whenever any cause
delays or threatens to delay the timely performance of this Agreement, the party
with such knowledge shall immediately notify the others of all relevant
information with respect to such cause. If Wakayama is delayed in any
performance or delivery by more than thirty (30) days, Natus may terminate the
delayed performance or delivery or this Agreement and such terminating shall not
be a breach of this Agreement and shall be without penalty.

                                      -13-
<PAGE>

         7.16  Governing Language.  English shall be the language of this
Agreement and the English language shall govern all disputes, performance and
interpretations.

         7.17  Joint Work Product.  The parties further acknowledge that they
have thoroughly reviewed this Agreement and bargained over its terms and that
for convenience, Natus has written down the terms of this Agreement.
Accordingly, this Agreement shall be construed without regard to the party or
parties for its preparation and shall be deemed to have been prepared jointly by
the parties.

         7.18  Notices.  Any notice required or permitted to be given under this
Agreement shall be in writing and shall be deemed to be sufficiently given if
delivered by hand or if sent by courier with a receipt requested or by
registered air mail, postage prepaid, addressed to each party, at the addresses
set forth above or to such other address as may be furnished for such purpose by
notice duly given under this Agreement. Such notice shall be deemed to have been
given when delivered by hand or five (5) days after deposit with the courier or
mail service. Any party may change its address for such communications by giving
such notice to the other party in conformance with this section.

         7.19  Severance.  If any provision of this Agreement is held to be
invalid by a court of competent jurisdiction, then the remaining provisions
shall nevertheless remain in full force and effect. The parties agree to
renegotiate any term held invalid and to be bound by the mutually agreed
substitute provisions.

                                      -14-
<PAGE>

         7.20  Waiver.  The failure of any party to this Agreement at any time
or times to require performance of any provision of this Agreement shall in no
manner affect such party's available remedies or right at a later time to
enforce the same. No waiver by any party of any condition, or of the breach of
any term, covenant, representation or warranty contained in this Agreement,
whether by conduct or otherwise (in any one or more instances) shall be deemed
to be or construed as a further or continuing waiver of any such condition or
breach or of any remedy or as a waiver of any other condition or as a breach of
any other term, covenant, representation or warranty of this Agreement.

Natus Medical, Inc.                 Toshibumi Wakayama, Personally
                                    And on behalf of Nippon Eurotec Ltd.,K.K.

By:   /s/ Tim C. Johnson            By:   /s/ Toshibumi Wakayama
    --------------------                ------------------------

Name:   Tim C. Johnson              Name:   Toshibumi Wakayama
      ----------------                    --------------------

Title:   President and CEO          Title:   President
       -------------------                 -----------

Date:   8/23/00
      ---------

Masaaki Kuroiwa, Personally, as pertaining solely to those obligations that
relate to him:

By:   /s/ Masaaki Kuroiwa
    ---------------------

Name:   Masaaki Kuroiwa
      -----------------

Kenji Tomita, Personally, as pertaining solely to those obligations that relate
to him:

By:   /s/ Kenji Tomita
    ------------------

Name:   Kenji Tomita
      --------------

Exhibit A Distribution Agreement
Exhibit B Transaction Timetable
Exhibit C Natus Medical, Inc. 1991 Stock Plan (as amended)
Exhibit D Major Areas
Exhibit E Confidentiality and Nondisclosure Agreement

                                      -15-
<PAGE>

                        Exhibit A  Distribution Agreement

                               (See Exhibit 10.6)

                                      -16-
<PAGE>

                        Exhibit B  Transaction Timetable

<TABLE>
<CAPTION>
ID                 Task Name                             Duration  Start Date  Finish Date   Predecessor Resource Names
---------------    -----------------------------------   --------  ----------  -----------   --------------------------
<S>                <C>                                   <C>       <C>         <C>           <C>
                   1 Prepare draft Wakayama proposal     2 wks     19-Jun-00    30-Jun-00
                   2 Finalize Arrangements w/Wakayama    22 days   17-Jul-00    15-Aug-00
                   3 Transition Agreement                22 days   17-Jul-00    15-Aug-00
                   4 Finish draft Wakayama agr           22 days   17-Jul-00    15-Aug-00
                   5 Obtain Asahi consent to NJKK        1 day     15-Aug-00    15-Aug-00
                   6 Sign Transition Agr                 0 days    15-Aug-00    15-Aug-00
                   7 Establish Natus K.K.                15 days   10-Jul-00    28-Jul-00
                   8 Japanese atty engage                10 days   10-Jul-00    21-Jul-00
                   9 Set up Natus Japan KK               10 days   17-Jul-00    28-Jul-00
                   10 Draft NJK.K.Founding Documents     10 days   17-Jul-00    28-Jul-00
                   11 Wakayama:NJKK B/D                  0 days    28-Jul-00    28-Jul-00
                   12 Kuroiwa NJKK B/D                   0 days    28-Jul-00    28-Jul-00
                   13 Tomita NJKK B/D                    0 days    28-Jul-00    28-Jul-00
                   14 Transition Business to NJ          236 days  15-Aug-00    10-Jul-01
                   15 Est NJKK Legal Office              1 day     10-Jan-01    10-Jan-01
                   16 Transition ALGO Sales to NJ        180 days  01-Nov-00    10-Jul-01
                   17 Initiate PR for NJ                 30 days   30-May-01    10-Jul-01
                   18 Write CA Program                   24 days   15-Aug-00    15-Sep-00
                   19 Transition Tech Support to NJ      88 days   09-Mar-01    10-Jul-01
                   20 Transfer Marketing to NJ           90 days   07-Mar-01    10-Jul-01
                   21 Transfer Selected NE Assets to NJ  60 days   13-Apr-01    10-Jul-01
                   22 Transition Shonin to NJ            137 days  01-Jan-01    10-Jul-01
                   23 Join ACCJ                          1 day     25-Aug-00    25-Aug-00
                   24 Hire NJKK Pres                     100 days  15-Aug-00    01-Jan-01
                   25 Get New Shonin?                    120 days  24-Jan-01    10-Jul-01
                   26 Natus-NE Contract End              0 days    10-Jul-01    10-Jul-01
                   27 Natus Japan Opening Party          0 days    10-Jul-01    10-Jul-01
</TABLE>

                                      -17-
<PAGE>

              Exhibit C  Natus Medical Incorporated 1991 Stock Plan

                         (See Exhibits 10.2 and 10.2.1)

                                      -18-
<PAGE>

                             Exhibit D  Major Areas

"Major Prefectures" means only the following Prefectures and areas:

Tokyo area:

1. Saitama Pref.   -    65,711
2. Chiba           -    54,006
3. Tokyo-to        -    97,958
4. Kanagawa        -    81,788  (Sub-total : 299,463 )

Nagoya area:

5. Nagano pref.    -    20,765
6. Gifu            -    20,151
7. Shizuoka        -    35,395
8. Aichi           -    73,737  (Sub-total: 150,043 )

Osaka area:

9. Shiga pref.     -    14,040
10. Kyoto-Fu       -    23,831
11. Osaka-Fu       -    88,386
12. Hyogo-ken      -    53,765
13. Nara-ken       -    13,158
(Sub-total : 193,180 )

Grand total of these three majors areas :  642,691 -  54.6%  of total of Japan.

Plus the following important areas:

14. Hokkaido
15. Ibaraki-ken

                                      -19-
<PAGE>

                                   Exhibit E

                    NATUS JAPAN K.K. NONDISCLOSURE AGREEMENT

Agreement made [date] _________, by and between Natus Japan K.K. ("NJKK"), and
[Name] ____________________ ("Director").  In consideration of Director's
continued service as a director of Natus Japan K.K., and the mutual promises
made and exchanged herein, Director and NJKK agree to the following terms and
conditions.

1.  Trade Secrets.  Director acknowledges that the following constitute NJKK
trade secrets ("Trade Secrets") in that, as used in NJKK's business, they are
secret, confidential, unique, and valuable, they were developed by NJKK at great
cost and over a long period, and in light of the fact that disclosure of any of
the items to anyone other than NJKK's officers, agents, or authorized Directors
will cause NJKK irreparable injury:

        a. Customer lists, supplier lists, call lists, marketing plans, sales
        channels, sales methods, customer specifications or requirements, NJKK's
        prices to customers, NJKK's or its customers' or suppliers' costs, and
        any other customer data which NJKK is obligated to keep secret;

        b.  Memoranda, notes, records, and other confidential technical data;

        c. Sketches, plans, drawings, blueprints, formulas, and other
        confidential research and development plans, information or data; or

        d. Manufacturing processes, including that pertaining to the
        development, production, reproduction or distribution of NJKK's
        software, its proprietary machinery or equipment specifications, as well
        as NJKK's (or that belonging to any subsidiary, parent or affiliate
        company) plant or production facility layout, any of its formulas, or
        the composition, design, internal method of working, source code,
        programming logic, and the like, of NJKK's products ("Products"), as
        well as the sources, prices, or nature of, materials, supplies or
        component for Products.

For purposes of this Agreement, the parties agree that items may constitute NJKK
Trade Secrets regardless of the form or medium in which such items may exist,
whether  tangible or intangible, whether visible to or readable by humans or
machines, whether stored in any format including written, hard-copy, liquid,
gas, or magnetic, and in whatever human or machine-cognizable language.  The
restrictions contained in this Agreement include confidential information and
trade secrets developed by Director while serving as a Director or employee of
NJKK.

2.  Nondisclosure.  Except as necessary in the legitimate pursuit of NJKK
business, Director will not disclose to anyone, other than NJKK's officers,
agents, or authorized Directors (unless otherwise directed in writing by NJKK's
President) any of the items listed in Paragraph 3 or any of NJKK's other
confidential information or Trade Secrets, whether developed before or after the
date of this Agreement.

3.  Inventions.  In order to facilitate the implementation of this Agreement,
Director hereby agrees to:

    3.1   Regularly and promptly, and in any event at NJKK's request, advise
NJKK's management of each invention, discovery, idea, or improvement
(collectively, "Invention"), whether or not patentable, that is made or
conceived by Director, either alone or with others, during the term of
Director's service as Director or employee and directly or indirectly related to
Director's work and investigations, or resulting from or suggested by any work
Director might do for NJKK, and promptly to submit to management a written
disclosure of each Invention describing its nature, use, and operation;

    3.2  Maintain a notebook record from day to day of all work of an important
character that Director does, including each Invention, and deliver all such
notebooks and all other records relating to such work, in whatever format or
medium, whether human-readable or machine-readable, to NJKK, immediately upon
the termination of Director's service as Director or employee;

    3.3 Assign, without further consideration, to NJKK, or NJKK's nominee, all
of Director's right, title, and interest in each Invention (whether or not
patentable) which is made during business hours or otherwise and which relates
to NJKK's business, or is made using NJKK's equipment, facilities, materials,
time, money, or other resources. Director will, at all times during his/her
service as Director or employee and after its termination for any reason, assist
NJKK or NJKK's nominee in every proper way (but entirely at NJKK's or NJKK's
nominee's own expense) to obtain, for NJKK's or NJKK's nominee's own benefit,
patents or other forms of protection for each Invention in any and all
countries. From time to time on request, Director will execute all papers and do
all proper things that may reasonably be required to protect and maintain the
rights of NJKK or NJKK's nominee in an Invention;

    3.4  Understand and agree that all information relating to each Invention
shall be considered proprietary and shall be protected as a Trade Secret in
accordance with this agreement; and

                                      -20-
<PAGE>

    3.5  List on Schedule A to this Agreement, all inventions, whether or not
patented or patentable, including a brief description of each, made or conceived
by Director prior to signing this Agreement.  These inventions are excluded from
the operation of this Agreement, and NJKK has no rights in them.  If such
inventions are patented (or a patent is applied for or pending), Director has
listed all parties having an interest in such patent, a copy of such patent (or
pending application, if public), and Director warrants that this information is
true and accurate.

4.  Agreement Binding After Employment Ends.  The provisions of this agreement
obligating Director to protection of NJKK Trade Secrets shall not terminate upon
the termination of Director's service as Director or employee, and such terms
and conditions shall be binding upon Director following termination of
Director's service regardless of the reason for such termination. For twelve
months following termination of Director's service as a Director or employee of
NJKK, Director shall not, without prior written approval of NJKK, directly or
indirectly obtain employment (including serving on the Board of Directors, or as
a consultant, advisor, investor or partner) with any entity that is in the
business of making, compiling, sourcing, financing, marketing, selling, or
otherwise distributing, products or services similar to, or in competition with,
those products or services made, sold or otherwise distributed by NJKK.

5.  Return of Material Upon Termination.  Upon termination of Director's service
as Director or employment for any reason, unless Director's services as Director
or employee are transferred to a parent, subsidiary or affiliate of NJKK where
Director's retention of the same is required for the conduct of Director's job,
Director at once will return to NJKK all of NJKK's secret and confidential
material that is in Director's possession or control.

6.  Successors, Assigns, Affiliates, and Subsidiaries.  This Agreement shall
inure to the benefit of NJKK and NJKK's parent, subsidiaries, affiliates,
successors, and assigns.

7. Public Information. Director's obligation of confidentiality under this
Agreement shall not apply to information which:

        a. Is already known to Director or is publicly available at the time of
        disclosure, but only to the extent that such knowledge by Director is
        verifiable by NJKK;

        b. Is disclosed to Director by a third party who is not in breach of an
        obligation of confidentiality; or

        c. Becomes publicly available after disclosure through no act of
        Director.

8.  Enforcement of Agreement.  This Agreement can be enforced by NJKK and by
NJKK's parent, subsidiaries, affiliates, successors, and assigns in the
jurisdiction and venue determined by NJKK (or its parent, subsidiary, affiliate,
successor or assign) to be appropriate.  Either equitable relief or damages at
law or both, or the equivalent thereto in any jurisdiction in which such action
is commenced, may be sought for breaches or threatened breaches of this
Agreement. The prevailing party in any action brought to enforce these terms
shall be entitled to an award of attorney's fees and costs of suit.  This
Agreement shall be interpreted in accordance with the laws of the State of
California without regard to its choice of law rules.

IN WITNESS WHEREOF, NJKK, and Director, have each signed this Agreement on the
above date in Tokyo, Japan.

<TABLE>
<CAPTION>
<S>                                                                 <C>
Director:                                                           Natus Japan K.K.:

______________________________                                      ___________________
Print Name                                                          Print Name and Title

______________________________                                      ___________________
Signature                                                           Signature

Date: __________                                                    Date: __________

Schedule A: List of Director's Prior Inventions, Attached:        Applicable _____
[To be filled in by Director]
                                                                  Not Applicable____
</TABLE>

                                      -21-

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