Accession Number : AD0410734

Title :   OBSERVATION OF THE ELEVATOR ILLUSION DURING SUBGRAVITY PRECEDED BY NEGATIVE ACCELERATIONS.

Descriptive Note : Joint rept.,

Corporate Author : NAVAL SCHOOL OF AVIATION MEDICINE PENSACOLA FLA

Personal Author(s) : Roman,James A. ; Warren,Bruce H. ; Graybiel,Ashton

Report Date : 15 MAY 1963

Pagination or Media Count : 8

Abstract : By observing apparent displacements of a real target, and visual afterimages, during weightless ness preceded by positive or negative accelera tion, it was possible to identify these displace ments as a special case of the elevator illusion, as opposed to the oculogravic illusion. Positive and negative linear acceleration, as well as weightlessness, was obtained for this purpose in jet aircraft. (Author)

Descriptors :   (*VISUAL ACUITY, WEIGHTLESSNESS), (*ILLUSIONS, ACCELERATION), GRAVITY, AIRCRAFT, TARGET RECOGNITION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE