Abstract
A cognitive set to facial expression was used as a model with the loading on working memory being increased by increasing the interval between the facial and triggering stimuli to 8 seconds. The aim was to determine whether the intensity of brain potentials evoked in a range of 41–60 Hz (the range 15–60 Hz was used) by facial stimuli is associated with the “success” of task performance (mistake rate). An index of average amplitudes of EEG oscillations was used to measure the response to facial stimuli, and γ responses proved to be associated with the number of mistakes in performing the task. The results make it possible to consider the γ responses to facial stimuli as an EEG correlate of the internal states that correspond to adequate actions of the subject in the test with a 8-s interval between the facial and trigger stimuli.
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Original Russian Text © V.N. Dumenko, M.K. Kozlov, 2016, published in Fiziologiya Cheloveka, 2016, Vol. 42, No. 5, pp. 13–22.
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Dumenko, V.N., Kozlov, M.K. Dynamics of the gamma-responses in an 8-second interval between facial and trigger stimuli as dependent the success of task performance. Hum Physiol 42, 476–484 (2016). https://doi.org/10.1134/S0362119716040034
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DOI: https://doi.org/10.1134/S0362119716040034