Abstract
High-luminance surrounds can reduce perceptual latency (temporal facilitation). Test stimuli of four durations (5 msec, 100 msec, 5-sec onset, and 5-sec offset) were judged against comparison stimuli of several durations. Temporal facilitation of almost 100 msec was obtained with the 5-msec test regardless of the comparison used. With 100 msec and 5-sec onset test stimuli, temporal facilitation was less and occured only with identical test and comparison stimuli. Offset latencies were shorter than onset latencies, and only one S showed temporal facilitation with offset test stimuli. Results were discussed in terms of the temporal course of brightness.
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