TY - JOUR

T1 - Suppression of Alpha and Beta Oscillations in the Course of Virtual Social Interactions

AU - Bocharov, A. V.

AU - Savostyanov, A. N.

AU - Saprygin, A. E.

AU - Merkulova, E. A.

AU - Tamozhnikov, S. S.

AU - Proshina, E. A.

AU - Knyazev, G. G.

N1 - This study was supported by the Russian Foundation for Basic Research (project no. 20-013-00404, conducting the research) and by the federal budget for basic research (project no. 122042700001-9, development of methods for data analysis).

PY - 2023/2

Y1 - 2023/2

N2 - The study involved 42 individuals (including 25 women) in the age range from 18 to 41. The aim of the study was to investigate the peculiarities of oscillatory dynamics accompanying the processes of interaction with a virtual character and to localize the effects detected. During the recording of the electroencephalogram (EEG), the subjects were asked to interact with a virtual character, choosing one of three options (“offer friendship,” “attack,” or “avoid contact”). Faces with five types of emotional expressions (angry, happy, frightened, sad, and neutral) were used as stimuli. Analysis of equivalent dipoles revealed that the choices of active interaction (“attack” and “offer friendship”), compared to avoidance of interaction, were accompanied by a greater decrease in α- and β-rhythms, which may be related to the processes of understanding the intentions of the virtual character. The choice of friendship, as compared to interaction avoidance, was accompanied by an increase in δ-rhythm, which may indicate the presence of a motivational component. The effects detected were found in clusters of equivalent dipoles, whose localization coincides with the structures of the mentalizing network and mirror neuron network, which are involved in the processes of evaluating people’s intentions.

AB - The study involved 42 individuals (including 25 women) in the age range from 18 to 41. The aim of the study was to investigate the peculiarities of oscillatory dynamics accompanying the processes of interaction with a virtual character and to localize the effects detected. During the recording of the electroencephalogram (EEG), the subjects were asked to interact with a virtual character, choosing one of three options (“offer friendship,” “attack,” or “avoid contact”). Faces with five types of emotional expressions (angry, happy, frightened, sad, and neutral) were used as stimuli. Analysis of equivalent dipoles revealed that the choices of active interaction (“attack” and “offer friendship”), compared to avoidance of interaction, were accompanied by a greater decrease in α- and β-rhythms, which may be related to the processes of understanding the intentions of the virtual character. The choice of friendship, as compared to interaction avoidance, was accompanied by an increase in δ-rhythm, which may indicate the presence of a motivational component. The effects detected were found in clusters of equivalent dipoles, whose localization coincides with the structures of the mentalizing network and mirror neuron network, which are involved in the processes of evaluating people’s intentions.

KW - EEG

KW - social interactions

KW - α-rhythm

KW - β-rhythm

KW - μ-rhythm

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85152700095&origin=inward&txGid=ec3ea30b8e043ea3b2c683d228b9c595

UR - https://www.mendeley.com/catalogue/2ea3b55c-d84b-3480-85c8-779d094a9dd2/

U2 - 10.1134/S0362119722600424

DO - 10.1134/S0362119722600424

M3 - Article

VL - 49

SP - 35

EP - 43

JO - Human Physiology

JF - Human Physiology

SN - 0362-1197

IS - 1

ER -