A Phantom-Sensation Based Paradigm for Continuous Vibrotactile Wrist Guidance in 2D Space

 We propose a novel motion guidance method for the human’s limbs. In particular, we achieve the motion guidance for the arm by providing single-point vibrotactile feedback in the wrist. In the proposed method, we attempt to produce vibrotactile stimulation in any direction perpendicular to the wrist using a vibrotactile illusion called Phantom Sensation. To achieve this, we built a device with six vibration motors, which is worn around the wrist. We also considered the wrist rotation and control the position of the feedback to produce a consistent direction w.r.t. the global coordinate system. The applicability of the proposed method is demonstrated via motion guidance for the wrist in two-dimensional space.