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Natalya Yermachenko, Aleksandr Yermachenko, Alexandr Latanov

Electroencephalographic Correlates of Visual Search Task Solution in Humans

2011. Vol. 8. No. 1. P. 89–100 [issue contents]

The authors have undertaken a study of alpha EEG dynamics associated with a task involving visual search of a relevant stimulus among several irrelevant stimuli. The control condition involved simple examination of several identical stimuli. Video-oculography was used to verify gaze direction associated with relevant stimulus search. The alpha EEG dynamics (desynchronisation) was considered as a correlate of attentional processes, and was shown to increase upon discovery of a relevant stimulus, compared to the levels recorded under control condition. The increase in desynchronisation during visual search is apparently associated with processes of stimulus relevance estimation (when voluntary modality-specific attention is involved). Even larger desynchronisation occurring in the frontal lobes supposedly reflects the significance of carrying out an adequate motor programme (when prefrontal attention mechanisms are involved).

Citation: Yermachenko, N. S., Yermachenko, A. A., & Latanov, A. V. (2011). Elektrograficheskie korrelyaty resheniya zadachi zritel'nogo poiska u cheloveka [Electroencephalographic Correlates of Visual Search Task Solution in Humans]. Psychology. Journal of Higher School of Economics, 8(1), 89-100. (in Russian)
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