The Washington times., 1916-11-25
GIDDINESS DUE TO
CANALS IN HEAD
Dsrangsmsnt Of Delicate Ear
! Passages Disturbs Bal
ancs Of Body.

HF You Keep your eyes open anu
turn quickly on your heel, you
win notice as you start TO re-
voive that the eyes fix them
selves upon some stationary object,
and then jump or jerk In the direction
you turn. srn
Then they fix on the next thing and
again jerk around. This the eyes
continue to do. In a word, thoy can
not smoothly encircle or pivot them
selves around Continuously and oven
iy.
so rapid, however. are these ocular
movements that--unless yon pay Mt
tention to it-you are unaware Of tho
jerky movements and fail to observe
any change In your vision. II this
were not so, the things you $50 would
appear to move, Instead OF being stu
tionary as they really are. II rotation
n continued long enough. the eyes no
longer rest on objects, but passiveiy
follow the movements OF the rest OF
thu body. The external objects then
seem to move in the opposite direc-
tion. Some people thus see trees NOV
ing away from the train they are In.
n you have spun around some time
the eyes continue for some time after-
ward TO move invoiuntarily long after
you stand still. They continue TO
around and Internationally swing sud:
denly back. This In REPEATED seversi
times.
Disc 10 IssaeiyDph Dsstusseses.
After you have spun about awhile
there II an almost Irresistible I'm
pulse to recommence rotation. These
movements are connected with the
semi-circuiar canals OF the inner ear.
There are three such horssshoe pipes
/ or half-circies. One has an upright
| position forward and backward. an
/ other IL horizontal. the third II up
/ right pointing right and left Each
| meets the other At right angiss. and
| their pipes are filled with fivld called
| sndolymph.
Any motion Of the head disturbs
this endolymph In one pises OF the
other. vertically to the front or back.
| right or left. or horizontally. This 10
owing to the tendency of the fluid TO
lag behind. You can imitsts this cy
;.lsnsai" % 1 f so.. s''-'u'' OF water AZ
When the movement Of the head
| ceases the fluid in the semi-eIrcular
canals-pictures OF which you can
lis own Inertia 20 contlnue In motion.
This causes the FALLING. rising, OF
dizzy sensations OF position. Heat
and cold also cause currents In these
th ns OF an inch in In disms,srG
which may make your head feel fun
or light.
sspss Deaf Mates Iansse.
when you spin around In q dance or
an exercise. the movements OF the
eyes differ according to the canals
which have been disturbed In rota-
ton. The head, eyes. and trunk arc
found to deviate In the Same direction
as the current. which may be set up
In the canals.
"NystaGmus.' or. the jerky eye
movements present In aibinos. miners
with spinal scierosis. and In other
msiadies whore tho gray matter OF
the spinal canal 10 eaten away or
SCARED. takes place In the opposite
direction OF movements Of the head.
The giddiness which 'ensues when
you spin around RAPIDLY 10 less or
wholly absent In q number OF deaf
rnutos. These are mutes whose semi
circular eanals are out OF function,
show the usual eye moyemants which
occur when they revoive themselves
these also md difficulty in walking
In n straight line, In standing on one
leg. or In baisncinE. themselves with
the ewes closed. A drunken man has
the same difficulty for the same rca-
5qs out u fsne,os s.2 2aon az. az
cohslic anesthetixatiion.
Giddiness occurs when the SUR
roundinGs rock OF sway. when
the two eyes tossshsr are called UPON
TO make strange or unusual move
ments.' when Giasse' you are Accus-
toned 10 are removed, when . boat
asas. anS hfocas' ODE. ,sp sss os sSd
rhythm Of the blood. or when anyr
thing surprises the general balance
OF the sndolymph In the semi circular
themselves quickly TO such altered
conditions.
tcopyrt. IsiS by Newspaper Feature ssrvies,.