Figure 9.

Somatosensory evoked potentials (SEPs) obtained from high-density EEG recording at electrode C3 made in subject CC during tactile stimulation of the little finger (d5) of the affected hand. SEP source waveforms were analyzed using brain electrical source analysis (BESA), MEGIS Software GmbH, Munich, Germany. Vertical red line represents stimulus onset. While prior to intervention no SEP was detectable (A), a clear P50, N80, and P200 indicative of normalized tactile somatosensory cortex processing could be obtained after 22 weeks of intervention (B).