The spatial and temporal conditions for perceiving velocity as constant.
Perceived velocities during a brief period of exposure (< 1.2 s) were measured to examine how much time is necessary to perceive velocity as constant. Moving sinusoidal gratings were used as stimuli at relatively low velocities. At the beginning of each stimulus presentation, a moving pattern was perceived as stationary until a critical time had passed. After that, perceived velocity was positively correlated with moving distance, irrespective of physical velocity below a critical moving distance. Beyond the critical moving distance, velocity was perceived as constant. A simple model is presented to explain these results.
Tayama
Tadayuki
T
Department of Psychology, Hokkaido University, N10 W7, Kita-Ku, Sapporo, 060-0810 Japan. tayama@psych.let.hokudai.ac.jp
D000054:Acceleration; D000328:Adult; D006801:Humans; D008960:Models, Psychological; D009039:Motion Perception; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D013028:Space Perception