Spectral Characteristics of the Resting-State EEG θ and α Rhythms in Groups of Subjects Undertaking Joint Activity with Different Effectiveness in Dyads

• Published in: Neuroscience and behavioral physiology Vol. 53; no. 5; pp. 836 - 845
• Main Authors: Murtazina, E. P., Ginzburg-Shic, Yu. A.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.06.2023; Springer Nature B.V
• Subjects: Behavioral Sciences; Biomedical and Life Sciences; Biomedicine; Comparative analysis; EEG; Electroencephalography; Feedback; Muscles; Neurobiology; Neurosciences; Rhythm; Sensorimotor system; Temporal lobe; resting EEG; sensorimotor test; competition; α rhythm; joint activity; θ rhythm; cooperation
• ISSN: 0097-0549; 1573-899X
• DOI: 10.1007/s11055-023-01476-8

The aim of this study was to carry out a comparative analysis of the spectral characteristics of the θ and α rhythms in the background EEG in groups of subjects with different effectiveness of subsequent joint sensorimotor activity in dyads. The study included 26 men who, working in 13 dyads, performed “Columns” training with biofeedback from EMG signals of the flexor muscles of the dominant hand. Depending on performance, the subjects in each dyad were assigned to one of two groups: “winners” or “losers.” The group of losers showed greater spectral power in the EEG θ rhythm in the frontal, central, and temporal cortical areas with the eyes closed as compared with the group of winners. Winners showed higher EEG spectral power levels in the α rhythm with the eyes closed in most areas of the cortex, especially in the α2 frequency range. The effectiveness of individual and joint training correlated negatively with spectral power in the θ rhythm and positively with the activity of α EEG rhythms with the eyes closed.