[The negative components of visual evoked potentials in the mechanisms of the classification of incomplete images].
Event-related brain potentials were recorded in 16 young adult subjects in response to a short presentation of recognizable and nonrecognizable visual images with an incomplete set of signs. Sequential brain maps and amplitude-temporal ERP parameters in 1000 ms poststimulus epoch were estimated (BMDP 4M and 7M, 1987). The results suggested that the component N450 was specifically related to a perception of nonrecognizable visual images. N70 and N150 reflected voluntary attention during invariant recognition and the late negative waves (600-1000 ms) reflected an "exhaustive search" for categorization of new information.
Lytaev
S A
SA
Shostak
V I
VI
D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology; D016002:Discriminant Analysis; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005163:Factor Analysis, Statistical; D005556:Form Perception / Q000145:classification* / Q000502:physiology; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011603:Psychophysiology; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors
Negativnye komponenty zritel'nykh vyzvannykh potentsialov v mekhanizmakh klassifikatsii nepolnykh izobrazheniĭ.