Fróðskaparrit - 01.01.1968, Síða 102

110
Motion Sickness
The rejlex of motion sickness.
The subject has been reviewed by Borison and Wang (1953)
and Chin and Smith (1955).
The receptors from which tihe reflex of motion sickness
originates are undoubtedly the vestibular apparatus of the ear.
This was suspected by Purkinje in 1820, and much evidence
has been colleoted since.
In the past was some belief that motion siakness was due to
maladjustement to traveling conditions and manifestation of
psyohiatric instability, but this is unlikely as animals are sub-
jects of motion sickness.
Deaf mute people or people with Menieres syndrome do
not develop motion sickness, nor are dogs affected after the
destruction of their vestibular apparatus. It is also known
that the reflex stimulus is linear acceleration, and this was
first suggested by Wilks (1875) when lifts were brought
into use.
Tahle No. 1.
Age Group Females Males Total
10-20 261 168 429
21-30 336 215 551
31-40 268 174 442
41-50 258 173 431
51-60 196 95 291
61-70 255 140 395
71-75 64 25 89
1638 990 2628