Experimental setup. The index fingertip pad received touch stimulation Download Scientific Diagram The vibration source position in this study (a) on the index finger Download Scientific Diagram The acupoint on the back of the thumb is LI4 (Large Intestine 4), also known as Hegu, located on the fleshy web between the base of the thumb and index finger, and Understanding How to Best Transform Speech into Tactile Vibrations Could Benefit Hearing Impaired People Georgetown University Medical Center Georgetown University Tingling Fingers at Night? It Might Be More Than Carpal Tunnel Expanding the possibilities with e fibers and yarns Textile Technology Source