Studies of waveform recognition in EEG analysis.

概要

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The purpose of the EEG (electroencephalography) analysis is to extract the important information from the brain state and the brain function. In the frequency domain, power spectrum methods are often used by dividing the total frequency range into several bandwidths. In the time domain, Fujimori's analysis has been developed to characterize the EEG waves as an extension of the zero-crossing method.In this paper, the waveform recognition method has been developed with consideration of the wave direction. The wave direction implies computation of the amplitude of the EEG wave from both the bottom and the peak of waves. The method here improves the recognition rate of the waves. Next, the EEG data have been sampled here under the 100Hz method contrary to the traditional 1kHz sampling method. After the 100Hz sampling, an interpolation function was applied. The method developed here greatly improves the EEG data reduction and shows good results of the characterization of the sleeping EEG wave.
一般社団法人日本生体医工学会の論文