[The cognitive set and problems of the human higher nervous activity].
Two kinds of cognitive sets for verbal and non-verbal stimuli were revealed in healthy subjects: an "intellectual blindness" and a distortion of perception and assessment of the stimuli size. Analysis of the response time to a probe stimulus and a spectral analysis of the cortical EEG revealed a participation of these sets in cortical functions: a stable set organizes and improves the stimuli perception and assessment but impedes this process in a modified situation. An optimal balance between the two sets seems to be necessary for effective cognitive activity.
Kostandov
E A
EA
Institute of Higher Nervous Activity and Neurophysiology of the Russian Acad. Sci., Moscow, Russia.
D003071:Cognition / Q000502:physiology*; D006613:Higher Nervous Activity / Q000502:physiology*; D006801:Humans; D007088:Illusions / Q000502:physiology; D010775:Photic Stimulation; D012718:Set, Psychology; D014705:Verbal Behavior / Q000502:physiology; D014796:Visual Perception / Q000502:physiology