||ISI produces reverse apparent motion.
In 3 experiments, a moving random-dot stimulus was presented in 2 sequential frames separated by an interstimulus interval (ISI) during which the field was spatially uniform with luminance equal to either the average luminance of the stimulus field (grey) or that of the black dots (black). Findings suggest that there is a significant biphasic temporal response function (TRF) that precedes the analysis of motion in the visual system. This indicates that the overall TRF of the visual system is the result of a cascade of functions from early through late stages and that only a portion of the overall TRF can be attributed to stages involved in motion analysis. (PsycINFO Database Record (c) 2007 APA, all rights reserved)