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Ritmičeskaja aktivnost mozga i interfejs mozg-komputer, osnovannyj na voobraženii dviženij
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SYSNO ASEP 0475849 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Ritmičeskaja aktivnost mozga i interfejs mozg-komputer, osnovannyj na voobraženii dviženij Title Rhythmic Brain Activity and Brain Computer Interface Based on Motor Imagery Author(s) Frolov, A. A. (RU)
Fedotova, I.R. (RU)
Húsek, Dušan (UIVT-O) RID, SAI, ORCID
Bobrov, P. (RU)Source Title Uspechi fiziologičeskich nauk - ISSN 0301-1798
Roč. 48, č. 3 (2017), s. 72-91Number of pages 20 s. Language rus - Russian Country RU - Russian Federation Keywords brain computer interface ; EEG ; motor imagery ; mu-rhythm ; synchronization ; desynchronization ; localization of sources ; neurorehabilitation Subject RIV IN - Informatics, Computer Science OECD category Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8) Institutional support UIVT-O - RVO:67985807 EID SCOPUS 85031730858 Annotation Interfejs mozg-kompjuter (IMK), osnovannyj na raspoznavanii patternov aktivnosti mozga, sootvetstvujuščich voobraženiju dviženij, v nastojaščeje vremja široko ispol'zujetsa kak v těoretičeskich issledovanijach pri izučenii organizacii celenapravlennogo dviženija, tak i v kliničeskoj praktike pri vosstanovlenii utračennych dviženij u bolnych. Klassifikacija kiněstětičeski voobražajemych dviženij osnovana na raspoznavanii izmeněnija prostranstvennogo raspredělenija EEG-aktivnosti kory v alfa-diapazoně častot. Na osnovanii sobstvennych issledovanij i dannych litěratury v statje izloženy voprosy prostranstvennogo izmeněnija aktivnosti kory v alfa-diapazoně pri rešenii blizkich zadač – vypolněnii, nabluděnii i voobraženii dviženij. Obsuždajutsa voprosy geněza i funkcionalnoj roli ritmov alfa-diapazona častot. Opisany rezultaty po vyděleniju istočnikov mju-ritma EEG s naiboleje vyražennymi reakcijami uveličenija i umenšenija amplitudy aktivnosti pri voobraženii dviženij kistěj ruk. Rešenije obratnoj zadači EEG s učetom individualnoj geometrii mozga i jego pokrovov pozvolilo lokalizovať eti istočniki v glubině centralnoj borozdy v predstavitělstvach kistěj ruk v pole Brodmana 3a, otvetstvennom za proprioceptivnuju čuvstvitělnosť. Predložena gipotěza, objasnjajuščaja funkcionalnoje značenije reakcij umenšenija i usilenija mju-ritma pri voobraženii dviženij. Description in English Brain computer interface based on recognizing patterns of brain activity during the motor imagery is widely used now both in basic research of intended movements and in clinics for motor recovery of post stroke patients. Classifying mental states corresponding to motor imagery is based on analyzing changes of EEG activity over the head surface in the alpha frequency range. Basing on the own researches and the data of the literature we discuss the problem of EEG alpha-activity distribution during performance of motor execution, observation and imagination. The origin and functional meaning of alpha rhythm is discussed. The revealed sources of mu-rhythm with the most exposed decrease and increase in oscillation amplitudes during imagining hand movements are described. Solving the inverse EEG problem with considering individual geometry of the brain and its covers allowed for localizing them in the depth of the central sulcus in Brodmann area 3a where proprioceptive hand sensitivity is presented. The hypothesis concerning the functional meaning of decrease and increase in mu-activity during the motor imagery is suggested Workplace Institute of Computer Science Contact Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Year of Publishing 2018 Electronic address https://elibrary.ru/item.asp?id=29679002
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