Accession Number : AD0248885

Title :   RELATIONSHIP BETWEEN MAGNITUDES OF VESTIBULAR REACTIONS AND EFFECTIVE CORIOLIS COUPLES IN THE SEMICIRCULAR CANAL SYSTEM

Corporate Author : ARMY MEDICAL RESEARCH LAB FORT KNOX KY

Personal Author(s) : GUEDRY, F.E. JR. ; MONTAGUE, E.K.

Report Date : 15 DEC 1960

Pagination or Media Count : 1

Abstract : When a human rider on a rotating structure rotates his head in a plane other than the plane of rotation of the structure, he perceives rotation in a plane approximately orthogonal to the other two. In this experiment, subjects were rotated at rates within the range 0.2 to 1.6 rad/sec. Re(over) cordings were made of the angular velocity of the structure, head rotation relative to the structure, vestibular nystagmus, and subjective estimates of angular displacement and velocity. Results indicate that the magnitude of the effective resultant mechanical couples which develop in the semicircular canal system due to Coriolis accelerations are directly related to the magnitudes of the subjective and oculomotor aspects of the vestibular reaction. Changes in spatial orientation indicated by a control stick provide an estimate of the magnitudes of errors to be anticipated in pilots exposed to this source of vertigo. (Author)

Descriptors :   *ACCELERATION TOLERANCE, *EAR, *MOTOR REACTIONS, *PHYSIOLOGY, *ROTATION, *VERTIGO, MOTION, PSYCHOLOGY.

Distribution Statement : APPROVED FOR PUBLIC RELEASE