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![Fig. 3. The brain-computer interface proposed by J. Vidal [8].](profile/Marcin-Kolodziej-2/publication/255783948/figure/fig3/AS:297849653874692@1448024299203/The-brain-computer-interface-proposed-by-J-Vidal-8_Q320.jpg)
In the last decade of the XX-th century, several academic centers have launched intensive research programs on
the brain-computer interface (BCI). The current state of research allows to use certain properties of
electromagnetic waves (brain activity) produced by brain neurons, measured using electroencephalographic
techniques (EEG recording in...
Context in source publication
Context 1
... state of a person. Both the signal amplitude and dominant frequencies undergo changes. It is assumed that a healthy human brain generates waves at frequencies ranging from 0.5 Hz to 100 Hz and amplitudes from several to several hundred µV. There are some distinctive rhythms of the EEG signal, usually slightly different defined by various authors (Fig. 4): − alpha rhythms with frequencies from 8 Hz to 13 Hz, which are particularly evident during the absence of visual stimuli, − beta rhythms with frequencies from 12 Hz to 30 Hz, which can be seen in the frontal region of the brain and are observed during concentration, − gamma rhythms found between 30 Hz -100 Hz, which can be seen ...
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