Brain-Computer Interface Channel-Selection Strategy Based on Analysis of Event-Related Desynchronization Topography in Stroke Patients

<div>Time-frequency graph and ERD topography during motor attempt for S4. During the motor attempt of the paretic or unaffected hand, based on Morlet Wavelet time-frequency analysis, no apparent decline was found in power spectral density during the experiment. Correspondingly, no ERD was shown in the ERD ratio-maps. (a) Paretic hand movement. (b) Unaffected hand movement.</div>

Journal of Healthcare Engineering

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Figure 3: Brain-Computer Interface Channel-Selection Strategy Based on Analysis of Event-Related Desynchronization Topography in Stroke Patients 