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Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 May-Jun;49(3):427-35.

[The EEG correlates of the erroneous identification of noise-masked visual stimuli].

[Article in Russian]

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Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.


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.

[Indexed for MEDLINE]

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