Accession Number : AD0692433

Title :   ASSESSMENT OF SEMICIRCULAR CANAL FUNCTION: II. INDIVIDUAL DIFFERENCES IN SUBJECTIVE ANGULAR DISPLACEMENT PRODUCED BY TRIANGULAR WAVEFORMS OF ANGULAR VELOCITY.

Descriptive Note : ARMY Navy joint rept.,

Corporate Author : NAVAL AEROSPACE MEDICAL INST PENSACOLA FLA

Personal Author(s) : Owens,Gale G. ; Guedry,Fred E. , Jr

Report Date : JUN 1969

Pagination or Media Count : 22

Abstract : Mean estimates (N = 26) of short arcs of passive whole-body rotation about an Earth-vertical axis were accurate when subjects used a psychophysical procedure that involved counterdisplacement of a pointer on a dial. The required retrospective displacement judgments yielded more accurate mean estimates of angular displacement than were obtained in an earlier experiment which probably involved concurrent velocity matching. The differences in response curves in the various conditions of the two experiments clearly illustrate the importance of attention to psychophysical procedures prior to attempting to develop models of the vestibular endorgans to explain results. The method used in this experiment is sufficient to detect prominent individual differences within a sample of aviation training candidates, and the results obtained thus far indicate high test-retest reliability (r12 = .94). (Author)

Descriptors :   (*SEMICIRCULAR CANALS, RESPONSE(BIOLOGY)), STIMULATION(PHYSIOLOGY), ROTATION, VESTIBULAR APPARATUS, PSYCHOPHYSIOLOGY, SPACE PERCEPTION, EQUILIBRIUM(PHYSIOLOGY), MEASUREMENT

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE