脳波・筋電位によるバイオフィードバックモニターの改良とその書痙治療への応用

概要

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A new EEG-EMG biofeedback device was developde by Industrial Products Research Institute and the first commercially available instrument was produced by us. The first instrument was modified in some points for improvements and the second type was produced. In this second type, three kinds of band pass filters are useed. The bio-potential obtained from electrodes on the occipital and the frontal are divided into alph component (8〜13Hz) and EMG+beta component (13〜250Hz) with two kinds of filters. Thus it is possible to discriminate the pure alpha wave from the pseudo-alpha waves. With another third filter theta component (4〜8Hz) can be selected. A recorder is connectable to the main instrument for recording original EEG, EMG+β wave, a wave and θ wave. Appearance of each wave can be detected by earphone or loud speaker, and also by three kinds of signal lamps. B. F. data which were obtained on five persons by this instrument are described in this article. Also this instrument was applied for the therapy of a patient suffering from writer's cramp and some results were obtained.
1983-06-30