ノイズ腱電気刺激を用いたハンドリダイレクションの知覚閾値拡大

抄録

To enhance the flexibility of haptic feedback in virtual reality (VR), hand redirection (HR) has been introduced to alter the virtual position of the hand from its real position. To extend the applications of HR, it is necessary to broaden the detection threshold (DT), the maximum shift that can be applied without the user noticing. We propose a method to increase the DTs of HR by boosting visual dominance in the integration of vision and proprioception, achieved by introducing noise to proprioception through weak Gaussian white noise electrical stimulation. A user study with 22 participants demonstrated that this noisy electrical stimulation significantly increases the DTs of HR. Participants generally found the electrical stimulation tolerable, and it did not negatively impact their sense of embodiment or presence.