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ATYPICAL NEUROPLASTICITY CHANGES OF M. EXTENSOR DIGITORUM COMMUNIS CORTICAL REPRESENTATION IN LEFT-HANDED INDIVIDUALS AFTER MOTOR IMAGERY TRAINING SESSIONS ENHANCED BY BRAIN COMPUTER INTERFACEстатья
- Авторы: Poydasheva A.G., Chernyavskiy А.Yu, Lyukmanov R.Kh, Aziatskaya G.А., Chervyakov А.V., Mokienkо О.А., Chernikovа L.А., Suponeva N.А., Piradov М.А.
- Журнал: Асимметрия
- Том: 11
- Номер: 1
- Год издания: 2017
- Издательство: Автономная некоммерческая организация "Научно-издательский центр медико-биологического профиля "Асимметрия"
- Местоположение издательства: Москва
- Первая страница: 5
- Последняя страница: 12
- Аннотация: Numerous studies have shown that motor imagery (MI) potentiates activation of the cortical areas responsible for planning and performing movements. Transcranial magnetic stimulation (TMS) is a non-invasive method which is used for mapping brain functions and studying neurophysiological characteristics of processes responsible for motor functions implementation. The interhemispheric asymmetry phenomenon and specifics of neuroplastic processes in left-handed persons are poorly studied. The aim of ourstudywas to investigatethe reorganization of cortical motor representation of extensor digitorum communis muscle after MI training course enhanced by brain computer interface (BCI) in left- and right-handed individuals. 8 healthy volunteers (2 of them were lefthanded) were enrolled. Every volunteer completed 10 training sessions of BCIenhanced MI. Mapping of m. extensor digitorum communis of dominant hand cortical motor representation with the evaluation of area, weighted area and the location of centers of gravity using self-designed program software was performed before and after 10 training sessions. Cortical representation areas were visualized using spherical Voronoi tessellation. Two left-handed individuals had area and center of gravity multidirectional displacement more than 13 mm (modulo average displacement was 14,58 mm) while right-handed individuals had no more than 5 mm displacement (average displacement 3,50 mm). Moreover, there was an increase in motor representation area by an average of 82,1 mm2, and its weighted area rose by 10472.0 μV *mm2. The results are summarized as follows: BCI enhanced MI trainings result in reliable neuroplastic changes in the form of increased motor representation areas; the displacement of cortical motor representation was significantly bigger in left-handed individuals compared to right-handed ones.
- Добавил в систему: Пойдашева Александра Георгиевна