皮膚電位水準の遠隔測定とその応用

概要

論文の詳細を見る
Human skin potential level (SPL) recorded from the palar surface reflects his level of alertness. When he is awake he shows about-50 mV of SPL. His SPL increases toward zero level as he becomes drowsy. We tested the possibility to apply the phenomenon to sleep control with the help of biofeedback technique. A small radio telemetry device for practical use was made, and by using it changes in SPL during various bodily motion were measured. The result showed a strong correspondence between mental activation and high negative SPL. Deviation of SPL toward less negative level was occasionally observed when subjects were walking and running. Therefore, bodily movement did not necessarily cause to keep SPL in deep negative level. The telemetry system was also used to measure SPL during driving a car. While driving drivers normally showed deep negative level of SPL. Their SPL, however, positively deviated by more than 10 mV when they felt drowsy or when they showed an abnormal way of driving which seemed to be caused by lowered vigilance. When drivers were asked to take a rest after stopping the car, their SPL lost negativity. These results imply that SPL is useful in detecting dozes or low alertness. The technique to detect drowsiness will be applicable to doze alarm system for drivers, pilots, etc. It will also be usefull in biofeedback for sleep promotion.
日本バイオフィードバック学会の論文
1982-06-30