Manipulation of event-related potential manifestations of information processing stages

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Science  26 Nov 1982:
Vol. 218, Issue 4575, pp. 909-911
DOI: 10.1126/science.7134983


The timing of two event-related potential components was differentially affected by two experimental variables. The earlier component (NA) was affected by degradation of the stimuli and the later component (N2) by the nature of a classification task. The results support the hypothesis that NA and N2 reflect sequential stages of information processing, namely, pattern recognition and stimulus classification.