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Science 3 August 1973:
Vol. 181. no. 4098, pp. 465 - 466
DOI: 10.1126/science.181.4098.465
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Articles

Evoked Potential Correlates of Signal Recognition between and within Modalities

Judith M. Ford 1, Walton T. Roth 1, Stanley J. Dirks 1, and Bert S. Kopell 1

1 Department of Psychiatry, Stanford University School of Medicine, Stanford, California 94305

Electrical responses evoked by clicks, flashes, changes in noise level, and changes in light level were recorded from the scalps of human subjects set to detect one of the stimuli. An early negative component of the evoked responses reflects selection between sensory modalities, whereas the later positive component reflects a more complex intramodal discrimination.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)