Manipulation of event-related potential manifestations of information processing stages.
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.
D000200:Action Potentials; D000328:Adult; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D003071:Cognition / Q000502:physiology*; D004192:Discrimination, Psychological / Q000502:physiology; D005071:Evoked Potentials; D006801:Humans; D007257:Information Theory; D010465:Perception / Q000502:physiology*; D013997:Time Factors