VISUAL SEARCH EXPERIMENTS: ACUITY, RESPONSE TIME, NOISE PERSISTENCE.
Technical rept. for Feb-Sep 64,
NAVAL ORDNANCE TEST STATION CHINA LAKE CALIF
Pagination or Media Count:
This experiment demonstrated the degradation in search performance resulting from a decrease in the frame rate of a static, structured display containing television-type visual noise. The display was produced by projecting moving pictures of the static, structured scene the noise in the scene was obtained by the double exposure and special printing of the film. Results indicate that restricted usefulness of a low frame rate, television-type display may be expected in a low signal-to-noise ratio condition. Neither peripheral and foveal acuity nor eye dominance scores correlated significantly with search time. There was a significant correlation between response time and search time this is attributed to the mental image processing and decision time common to both tasks. Author