Abstract
Perceived-order latencies were obtained with stimulus-onset asynchronies (SOAs) ranging from − 200 (test preceding surround) to +200 msec. When the test stimulus preceded the surround, no appreciable change of latency was obtained; therefore, the results of the present study are in agreement with previous studies which found no effect of SOA on reaction time. Since effective brightness of a test stimulus is reduced maximally when the test stimulus precedes the masking stimulus by about 75 msec, the present study and previous reaction time studies indicate that mechanisms mediating latency are different from mechanisms mediating brightness.
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This research was supported by Grant EY-00021 from the National Eye Institute, USPHS, to the first author. This paper is based on a portion of the second author’s masters’ thesis.
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Matteson, H.H., Flaherty, T.B. A latency measure of metacontrast. Bull. Psychon. Soc. 7, 545–547 (1976). https://doi.org/10.3758/BF03337278
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DOI: https://doi.org/10.3758/BF03337278