Accession Number : ADP004640

Title :   Vestibular and Oculomotor Function during Gz Variations,

Corporate Author : ROYAL DANISH AIR FORCE COPENHAGEN (DENMARK)

Personal Author(s) : Vesterhauge,S. ; Maensson,A. ; Johansen,T. S.

Report Date : NOV 1984

Pagination or Media Count : 5

Abstract : 10 Normal subjects were exposed to G-force variations during parabolic flights and turns in a SAAB Supporter aircraft. A vertical head drift accompanied by a vertical eye drift was recorded in all subjects. The eye drift was most prominent during the hyper-G phase of the parabolic manoeuvres. Compensatory eye movements were induced by horizontal head rotations. No statistical significant changes could be demonstrated in this reflex. Horizontal oculomotor saccades were induced with a visual distance of + or - 10 deg. A significant increase of the latency time could be demonstrated during the weightless phase of the parabolas. It is concluded that spontaneous eye and head drift and disturbances in voluntary eye movements might contribute to the development of motion sickness during combat manoeuvres and space flight.

Descriptors :   *ACCELERATION TOLERANCE, *VESTIBULAR APPARATUS, *EYE, AEROSPACE MEDICINE, PARABOLAS, FLIGHT MANEUVERS, DRIFT, EYE MOVEMENTS, HEAD(ANATOMY), ROTATION, MOTION SICKNESS, SYMPOSIA

Distribution Statement : APPROVED FOR PUBLIC RELEASE