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Science 23 February 1973:
Vol. 179. no. 4075, pp. 814 - 816
DOI: 10.1126/science.179.4075.814
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Articles

Evoked Potential Correlates of Expected Stimulus Intensity

H. Begleiter 1, Bernice Porjesz 1, Consolacion Yerre 1, and B. Kissin 1

1 Department of Psychiatry, Downstate Medical Center, Brooklyn, New York 11203

The electrophysiological responses to a flash of medium intensity have different wave shapes in trials in which the occurrence of bright stimuli or dim stimuli is expected. When a bright or dim stimulus is signaled, the potentials evoked by the medium stimulus resemble the responses evoked by a real bright or dim flash.


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