皮膚電位水準を利用した入眠抑制バイオフィードバック : 実用化への問題点

概要

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Human skin potential level (SPL) reflects his level of vigilance. When he is awake he shows about -50 mV of SPL. His SPL increases toward zero level as he becomes drowsy. We applied the phenomenon to doze suppression with the help of biofeedback technique. However, many technical problems are involved in the practical use of the biofeedback system : problems of (1) electrodes, (2) amplifiers, (3) differences between individuals, (4) feedback method, (5) system reliability, etc. In this paper discussions are focused on the above items (1) and (3). In the discussion on electrodes a practical site for active electrode and a convenient abrading method for reference electrode are proposed. Furthermore, in order to reduce differences in SPL between individuals the normalized threshold level is proposed, the effectiveness of which was tested through a series of experiments.
日本バイオフィードバック学会の論文
1981-06-30