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Vertex evoked potentials in a rating-scale detection task: Relation to signal probabilityVertex evoked potentials were recorded from human subjects performing in an auditory detection task with rating scale responses. Three values of a priori probability of signal presentation were tested. The amplitudes of the N1 and P3 components of the vertex potential associated with correct detections of the signal were found to be systematically related to the strictness of the response criterion and independent of variations in a priori signal probability. No similar evoked potential components were found associated with signal absent judgements (misses and correct rejections) regardless of the confidence level of the judgement or signal probability. These results strongly support the contention that the form of the vertex evoked response is closely correlated with the subject's psychophysical decision regarding the presence or absence of a threshold level signal.
Document ID
19740019460
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Squires, K. C. (California Univ. San Diego, CA, United States)
Squires, N. K. (California Univ. San Diego, CA, United States)
Hillyard, S. A. (California Univ. San Diego, CA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1974
Subject Category
Biotechnology
Report/Patent Number
NASA-CR-138796
Accession Number
74N27573
Funding Number(s)
CONTRACT_GRANT: NGR-05-009-083
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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