Title: Development of Impedance Sensor Switch for the Locked-in Syndrome Patient
Author: Etsuko NAGATA, Naofumi TANAKA, Akira TANUMA, Yasutomo OKAJIMA (Tsukigase Rehabilitation Center, Keio University) Shigeto IKEDA, Yoshihiro MURAOKA, Yutaka TOMITA (Science & Technology, Keio University)
Proceedings of 12th Japanese Conference of Advancement of Rehabilitation Technology, Vol.12 pp.415-416(August,1997)
Keywords:
Author to whom correspondence should be addressed:
Etsuko NAGATA (Tsukigase Rehabilitation Center, Keio University)
TEL:0558-85-1701


Abstract:
They had developed impedance sensor switch for the locked-in syndrome patient whose voluntary movements are vertical eye movement and opening/closing eye. This switch applies four electrode method with sine wave fixed current to measure impedance and it can measure only internal tissues impedance with no influence of surface skins impedance. It can detect opening/closing eye movement by setting it side of orbita, and raise no tiredness and no error. In this case the switch is connected to a wireless interphone, and the patient call his assistants with this switch.