Sources of the Electrical Activity of Brain Areas Involving in Imaginary Movements

0534818 - ÚI 2021 RIV GB eng J - Journal Article
Kerechanin, J. V. - Húsek, Dušan - Bobrov, P.D. - Fedotova, I.R. - Frolov, A. A.
Sources of the Electrical Activity of Brain Areas Involving in Imaginary Movements.
Neuroscience and Behavioral Physiology. Roč. 50, č. 7 (2020), s. 845-855. ISSN 0097-0549
Institutional support: RVO:67985807
Keywords : brain–computer interface * neurointerface * EEG * imaginary movements * synchronization and desynchronization of EEG activity * independent components analysis methods * EEG inverse problem
OECD category: Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Method of publishing: Limited access
http://dx.doi.org/10.1007/s11055-020-00977-0

We describe the most significant sources of electrophysiological brain activity identified during use of a brain–computer interface based on recognition of EEG patterns during imaginary movements. The main tool for identifying sources consisted of six independent components analysis (ICA) methods based on different criteria of independence. Measures of the significance of sources were: their occurrence rates in different experimental sessions, repetition of extraction in each session using different ICA methods, the effects of each source on of recognition accuracy for EEG patterns corresponding to different imaginary movements, and the potential for approximating the activity of an individual current dipole. The overall set of indicators identified five sources located in the primary somatosensory cortex of both hemispheres, in the left premotor area, the supplementary motor area, and the precuneus. The functional significance of these sources in the framework of the contemporary concepts of the interaction of brain areas supporting the execution of motor functions is discussed.
Permanent Link: http://hdl.handle.net/11104/0312980