Abstract
Control of visual fixations was studied as three stump-tailed macaques (Macaca arctoides) performed on a search task. The presentation of each visual stimulus was delayed for a short time (0-163 msec) after the beginning of a fixation on the location of that stimulus. The duration of visual fixations increased as a function of stimulus onset delay up to 130 msec. However, the increase in fixation duration was only half the stimulus onset delay imposed. This result suggests that oculomotor reactions are facilitated by longer foreperiods in a manner similar to other disjunctive reactions.
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Vaughan. J. Delay of stimulus presentation after the saccade in visual search. To be read at Eastern Psychological Association meetings. April 1976.
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This research was supported by NIMH Grant MH 24855-01 to the first author, and NSF Grant GB 38580 to Allan M. Schrier. We thank Dr. Schrier for the hospitality of the Primate Behavior Laboratory at Brown University, where the experiments were conducted; Dr. Tom Brackett for the use of computing facilities at Colgate University; and Dr. George A. Gescheider, who sponsors this paper and accepts editorial responsibility for its contents.
Arthur Stone is now at the State University of New York at Stony Brook.
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Vaughan, J., Stone, A.A. Effect of stimulus onset delay in visual search by monkeys. Bull. Psychon. Soc. 8, 54–57 (1976). https://doi.org/10.3758/BF03337074
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DOI: https://doi.org/10.3758/BF03337074