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 The vibration source position in this study (a) on the index finger Download Scientific Diagram Reaching and Grasping With a Sensory Substitution Glove: Variability of Practice Effects Understanding How to Best Transform Speech into Tactile Vibrations Could Benefit Hearing Impaired People Georgetown University Medical Center Georgetown University ToolBox Talk #42: HAND ARM VIBRATION SYNDROME (HAVS) As the majority of our operations involves working with our hands in some capacity whether it is hitting a hammer, using power tools,