パワーアシストと振動刺激が生起する運動錯覚現象

抄録

We focused on kinesthetic illusion (KI) with the aim of developing simple, compact and inexpensive rehabilitation system. In this research, we aim to forcibly extend the wrist by a motor and clarify the relationship between the extension angle condition and the illusion amount in order to show effectiveness of KI in work therapy. To accomplish the abovementioned objective, a motor was used to extend the right hand and a safety device was designed and developed to limit the motor movement. The amount of illusion was evaluated by analyzing the direction of the illusion, the maximum angle of the illusionary limb, the speed, and the latent time from the trajectory by reproducing the illusion with the left hand’s bend. Comparing the maximum extension angles of the two experiments of discrete and continuous angle changes, it can be seen that the maximum extension angle increases with discrete angle changes at any frequency. Although we cannot conclude superiority of continuous angle change because latency and extension speed were not analyzed in the continuous angle change, both of discrete and continuous changes produced larger maximum extension angle than no-assist cases.