Abstract
ABSTRACTThis paper reviews the hypothesis that averaged evoked response (AER) recordings encode the perception of stimulus content. AERs may be altered by changing subjects' expectancies, attention, affect, etc. AERs may also be altered by differences in the physical parameters of the eliciting stimuli. But if perception is viewed as the processing of the specific informational content of the stimuli, there is no convincing evidence that AERs encode perception. Thus, AKRs appear to be a summary of the activity of stimulus feature detectors and the results of decisions concerning the salience or importance of that information—AERs represent general operations not the specific content of the information being processed.
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