[The EEG correlates of the erroneous identification of noise-masked visual stimuli].
Specific features of EEG coherence of a man-operator were revealed before the erroneous actions ("false alarm" and "signal omission") in the process of training to recognize masked visual stimuli. In persons with expressed alpha-rhythm at rest the "false alarms" were associated with the highest level of beta-frequency correlation in the frontal areas. Errors of the "signal omission" type were observed against the background of increased alpha-coherence in the frontal and occipital derivations. These features were more pronounced in the right brain hemisphere. The results suggest that the erroneous actions are predetermined by a specific state of the frontal brain regions, which participate in decision making, and are probably related with inadequate information transmission from the caudal regions to the frontal ones.
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
L A
LA
Potulova
D000328:Adult; D000513:Alpha Rhythm; D001611:Beta Rhythm; D004569:Electroencephalography / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D010470:Perceptual Masking / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D012016:Reference Values; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*
EEG-korreliaty oshibochnogo opoznaniia zashumlennykh zritel'nykh stimulov.