Abstract
Two Ss were presented with a series of near threshold flashes of light and instructed to report for each flash in which of eight different positions it appeared, and the degree to which they were certain about this judgment. Average evoked potentials to the flashes were also recorded from the occiput. A positive-going wave with latency to the peak of 250 msec appeared when the S was certain about his judgment, whether or not he was correct.
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1. The writer is NRC-Resident Research Associate, on leave from the University of Illinois. The data were collected at the laboratory of Dr. D. B. Lindsley at U.C.L.A. with the support of NSF Grant GB 1844 and NASA Contract NsG-623.
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Donchin, E. Average evoked potentials and uncertainty resolution. Psychon Sci 12, 103 (1968). https://doi.org/10.3758/BF03331217
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DOI: https://doi.org/10.3758/BF03331217