[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.
Potulova
L A
LA
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
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.