Accession Number : AD0287083

Title :   SOME OBSERVATIONS ON THE BEHAVIOR OF A VISUAL TARGET AND A VISUAL AFTER-IMAGE DURING PARABOLIC FLIGHT MANEUVERS

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : ROMAN,J.A. ; WARREN,B.H.

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : The apparent displacement of a real target and a visual after-image were observed in the F-100F aircraft during periods of weightlessness averaging 45 seconds. A real target appears to be displaced upward from center for accelerations greater than 1 G positive, and appears to be displaced downward for accelerations less than 1 G positive. A visual after-image, when observed in the absence of a real target, appears to be displaced from center in a direction opposite to that observed for a real target. Fixating on a real target (RT) in the presence of a visual after-image (VAI) resulted in movement of both the RT and the VAI concurrently in the fashion described for a real target. Differences in interpretation of results, on the basis of the opposite direction of illusory movements using real targets and visual after-images, were resolved. (Author)

Descriptors :   *AFTERIMAGES, *AEROSPACE MEDICINE, BEHAVIOR, SPACE PERCEPTION, TARGET RECOGNITION, VISION, WEIGHTLESSNESS

Distribution Statement : APPROVED FOR PUBLIC RELEASE