EEG Real-Time Feedback Based on STFT and Coherence Analysis
SHANDONG UNIV JINAN (CHINA) DEPT OF ELECTRICAL ENGINEERING
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A method and system of real-time feedback and analyzing Electroencephalogram EEG using short-time Fourier transform STFT and coherence analysis is presented in this paper. The system composition of hardware and software are described. By the utilization of this method and system, the EEGs real-time-frequency distribution TFD is obtained and the EEG temporal spectral 3-dimension array is displayed on computers screen for EEG real- time feedback. The time-frequency analysis TFA such as Wigner-Ville distribution WVT and wavelet transform WT has been successfully applied in some biomedical signals to detect both temporal and spectral features of biomedical signals. But real-time realization of TFA is difficult since the computation complication of WVT and WT. By using the STFT algorithm we develop a system for the EEG feedback and TFA in real-time. This system may be used for EEG biofeedback and possesses of value of clinical practice.
- Medicine and Medical Research