From: lpb@florida.swdc.stratus.com (Len Bucuvalas)
Newsgroups: sci.skeptic
Subject: Re: Implementing a brain machine? (was Re: Voyager(TM) light... )
Date: 14 Sep 92 22:09:09 GMT

In article <KENTD.92Sep10110311@zappa.FtCollins.NCR.com> Kent.Dalton@FtCollinsCO.NCR.com writes:
>
>>>>>> lpb@florida.swdc.stratus.com (Len Bucuvalas) said:
>Len> ryb@microsoft.com (Danger Mouse) writes:
>
>>It's a small walkman-like box, with headphones and opaque glasses with two
>>LEDs 3/4" apart over each eye. There are eighteen programs ranging from 10 to
>>60 minutes in length; each program is a different sequence of flashing the
>>LEDs and making a tone at varying frequencies. 
>
>Len> The are something like 36 (?) different programs yu can apply. All
>Len> ranging in frequency from beta to delta state programming. 
>
>This sounds like a fun home electronics project.... It sounds almost
>trivial to build one yourself provided you know how the "programs" work.
>
>Can one of you folks who actually owns one of these things tell me whether
>both eyes' LEDs flash simultaneously or are they flashing alternately
>(trying to match a certain brain wave via a beat frequency?)?

The LEDs and sounds flash/pulse according to a preset program .. the
theory being that the brain will maych the frequency. So say if the LEDs
and sounds are going off at 7 hz....so will your brian eventually.
>
>I would guess once that is established, you could then just alter the
>flash rate to correspond to the desired brain wave frequency, mount it
>on an old pair of cheap sunglasses and off you go! :^)

Exactly!
>
>Anybody know any more about the theory of operation for these beasties?
>
>Of course, I'd be willing to report back to the net with any "findings"
>if I do get enough info to build one of these things. :^)
>

Well the glasses can be any cheap plastic machined in the shape with two
LEDs on the inside connected to a wire at the end an 1/8" jack.

the headphones can be anything with a small 1/8" jack.

you would need a simple tone generator with a circuit to control sweep
and phase..interfaced to a circuit that generated the visual. 
The the audio circuit can be disabled manually and allows the input of
an external sound source like a Moody Blues tape ;^).....

tell you what.....I'll check out the board and send a description on
over to ya.....send me an Email as a memory jogger?

>
>--
>/**************************************************************************/
>/* Kent Dalton                   * EMail: Kent.Dalton@FtCollinsCO.NCR.COM */
>/* NCR Microelectronics          * Phone: (303) 223-5100 X-319            */  
>/* 2001 Danfield Ct. MS470A      *   FAX: (303) 226-9556                  */
>/* Fort Collins, Colorado 80525  *                                        */
>/**************************************************************************/
>All of a sudden, I want to THROW OVER my promising ACTING CAREER,
> grow a LONG BLACK BEARD and wear a BASEBALL HAT!!
> ...  Although I don't know WHY!!

Len


--
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The accountability of government has gone to the point where the very
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		-- Ralph Nader @ Harvard Law School, 1/15/92
Newsgroups: sci.skeptic