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It was demonstrated previously that neurorehabilitation with the BCI-controlled robotic device Exohand-2 combined with conventional therapeutic modalities resulted in significant motor improvement in children with cerebral palsy. However, EEG records were not analyzed in the previous study. The aim of this paper was to describe the reactivity patterns of the EEG α-rhythm during a series of 10 BCI-based neurorehabilitation sessions. The study was carried out in 32 boys and girls aged 10 to 18 years with right- or left-side hemiparesis. EEG was recorded from 21 electrodes at rest and during kinesthetic imagery of finger extension. During the first session, patterns of α-rhythm reactivity during motor imagery differed between patients with left- and right-side hemiparesis. The differences were statistically significant at Р2 during left hand movement rehearsal (F1, 30 = 5.10; p < 0.05). During the final session, the pattern of α-rhythm reactivity was different: synchronization was taken over by desynchronization at some electrode sites, suggesting increased activity of the neocortex. The most conspicuous EEG changes were observed in children with left-side hemiparesis (F20, 300 = 1.84; p < 0.05). By the end of the rehabilitation course, the differences between patients with left-and right-side hemiparesis became much less pronounced. Rearrangements in the EEG patterns in the α-frequency band can be regarded as signs of beneficial reorganization of neural circuits responsible for planning and executing complex hand movements.

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Kurs neyroreabilitatsii s primeneniyem kompleksa «Ekzokist'-2» (neinvazivnyy interfeys mozg–komp'yuter i ekzoskelet kisti) v sochetanii s traditsionnym kurortnym lecheniyem privodit u detey s DTSP k znachimomu uluchsheniyu pokazateley dvizheniy, odnako kharakteristiki EEG ne byli proanalizirovany. Tsel'yu raboty bylo opredelit' osobennosti reaktivnosti EEG patsiyentov v chastotnom diapazone a-ritma pri prokhozhdenii kursa iz 10 seansov robotizirovannoy terapii. EEG registrirovali v 21 otvedenii v usloviyakh pokoya i kinesteticheskogo voobrazheniya dvizheniy razgibaniya pal'tsev ruk u 32 detey oboyego pola v vozraste 10–18 let, imeyushchikh diagnoz «levo- i pravostoronniy gemiparez». Vo vremya pervogo seansa patterny reaktivnosti a-ritma pri voobrazhenii dvizheniy u grupp detey s levo- i pravostoronnim gemiparezom razlichalis', prichem razlichiya dostigali statisticheskoy znachimosti v otvedenii R2 pri voobrazhenii dvizheniy levoy kisti (F1, 30 = 5,10; p < 0,05). Pattern reaktivnosti a-ritma vo vremya desyatogo seansa otlichalsya zameshcheniyem reaktsiy sinkhronizatsii v ryade otvedeniy na desinkhronizatsiyu, chto svidetel'stvuyet ob uvelichenii aktivatsii neokorteksa. Naiboleye vyrazhennymi byli izmeneniya EEG u detey s levostoronnim gemiparezom (F20, 300 =1,84; p < 0,05). Po zavershenii kursa stepen' razlichiya pokazateley EEG u patsiyentov s levo- i pravostoronnim gemiparezom umen'shilas'. Vyyavlennyye perestroyki patterna EEG v chastotnoy polose a-ritma mozhno rassmatrivat' kak proyavleniye protsessov blagopriyatnoy reorganizatsii neyronnykh tsepey, kontroliruyushchikh planirovaniye i vypolneniye slozhnykh dvizheniy ruk.