P300—An Orienting Reaction in the Human Auditory Evoked Response
- 1 February 1973
- journal article
- research article
- Published by SAGE Publications in Perceptual and Motor Skills
- Vol. 36 (1), 219-225
- https://doi.org/10.2466/pms.1973.36.1.219
Abstract
The auditory average evoked response (AER) to unpredictable changes in tone-burst frequency was studied in 12 human Ss who were instructed to ignore all tones. In the vertex-ear leads the AERs to frequent tones contained the usual negative-positive complex (N1-P2-N2). The AERs to infrequent tones generally were more positive in the 300-msec. region as compared to that region of the AERs to frequent tones. This positivity decreased during the session as did the N1-P2 amplitudes. Average N1-P2 amplitudes were not different for the two stimulus conditions.Keywords
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