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Vertex potentials evoked during auditory signal detection - Relation to decision criteriaVertex potentials were recorded from eight subjects performing in an auditory threshold detection task with rating scale responses. The amplitudes and latencies of both the N1 and the late positive (P3) components were found to vary systematically with the criterion level of the decision. These changes in the waveshape of the N1 component were comparable to those produced by varying the signal intensity in a passive condition, but the late positive component in the active task was not similarly related to the passively evoked P2 component. It was suggested that the N1 and P3 components represent distinctive aspects of the decision process, with N1 signifying the quantity of signal information received and P3 reflecting the certainty of the decision based upon that information.
Document ID
19740029408
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Squires, K. C.
Hillyard, S. A.
Lindsay, P. H.
(California, University La Jolla, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
October 1, 1973
Publication Information
Publication: Perception and Psychophysics
Volume: 14
Subject Category
Biosciences
Accession Number
74A12158
Funding Number(s)
CONTRACT_GRANT: NIH-NS-07454
CONTRACT_GRANT: NGR-05-009-083
Distribution Limits
Public
Copyright
Other

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