Effects of the Mirror Box Illusion on EEG Sensorimotor Rhythms in Voluntary and Involuntary Finger Movements

Syrov, N.V.; Vasilyev, A.N.; Solovieva, A.A.; Kaplan, A.Y.

Авторы: Syrov N.V., Vasilyev A.N., Solovieva A.A., Kaplan A.Ya
Журнал: Neuroscience and Behavioral Physiology
Том: 52
Номер: 6
Год издания: 2022
Издательство: Kluwer Academic/Plenum Publishers
Местоположение издательства: United States
Первая страница: 936
Последняя страница: 946
DOI: 10.1007/s11055-022-01318-z
Аннотация: Rhythmic sensorimotor EEG activity patterns were studied in 25 subjects in experiments with a mirror box illusion of movement. In the experiments, the subjects performed voluntary clenching of the right hand and, at the moment of the movement, saw the resting left hand or a mirror reflection of the moving right hand. In conditions with involuntary movement, clenching was triggered by functional neuromuscular electrical stimulation (FES). EEG signals from the subjects were processed by spatial filtration with extraction of components containing movement-sensitive activity: event-related desynchronization (ERD)/synchronization (ERS) in frequency ranges corresponding to the EEG μ and β rhythms. Analysis of the frequency characteristics of identified spatial sources showed that ERD arose in the β range at higher frequencies than ERS. Source locations also differed: sources of β-ERS were located in the rostromedial direction relative to sources of β-ERD, which in turn had almost identical locations to “μ rhythms” of central-parietal location. The mirror box illusion factor had no influence on the amplitude or spatio-temporal characteristics of sensorimotor EEG activity recorded during performance of movements but had a statistically significant effect in reducing the post-movement β-ERS. Thus, development of the mirror box illusion led to a decrease in β synchronization power in both active and FES-induced movements but had no effect on the amplitude of μ-/β-ERD. These results provide evidence for the potential application of delayed β-ERS as an EEG marker for the development of the mirror box illusion in mirror therapy, including complex poststroke rehabilitation methods including mirror therapy and FES.
Добавил в систему: Васильев Анатолий Николаевич

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Effects of the Mirror Box Illusion on EEG Sensorimotor Rhythms in Voluntary and Involuntary Finger Movementsстатья

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