[Post-traumatic alpha-and mu-wave-foci (author's transl)]

28 patients with an activated focus (8-12 c/s focus) in the central region were examined for mu-wave-activity utilizing visual and calculation of the coherence function. Over 60% (18 patients) of these foci were mu-wave-foci. This type of mu-waves was decidedly less sensitive to change in vigilance than physiological mu-waves. Seven foci were alpha-foci and three foci could be classified as neither alpha- nor mu-wave-foci since they did not react to sensory and sensomotoric stimuli. Furthermore, it was demonstrated that the pathological mu-waves and the pathological alpha-waves were very similar in their characteristics.