SOME OBSERVATIONS ON THE BEHAVIOR OF A VISUAL TARGET AND A VISUAL AFTER-IMAGE DURING PARABOLIC FLIGHT MANEUVERS
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1962
- Accession Number
- AD0287083
Entities
People
- B.h. Warren
- J.a. Roman
Organizations
- United States Air Force School of Aerospace Medicine