Jun Nishida , University of Tsukuba
Kenji Suzuki , University of Tsukuba/JST
This paper presents a synchronous kinesthetic interaction among people through haptic input/output based on biosignal measurement and stimulation. Users are able to bi-directionally transmit kinesthetic experiences such as rigidity of joints or exertion of muscles in addition to physical bodily motion. Such interaction would be very important in the fields of rehabilitation and sports training. In this study, we introduce a set of wearable devices that is capable of both electromyogram (EMG) measurement and electrical muscle stimulation (EMS) simultaneously on the same muscle by using common electrodes. To achieve smooth kinesthetic bi-directional interaction, we propose a new method for discharging the residual potential of the stimulation in order to enable fastest simultaneous operation (40Hz). Through a performance evaluation, participants could recognize the teacher's exertion strength on a 5-point scale without visual information.