Augmenting natural skin stretch during active finger motion reshapes hand proprioception

Abstract There is strong evidence that skin stretch at the joint contributes to proprioception, the perceptual representation of body position and motion. Previous studies on fingers and hand dorsum focused on illusory movement elicited by skin-stretch stimuli when no actual motion was performed, often combined with local anesthesia and mostly delivered qualitatively, leaving unclear how controlled, augmented skin deformation influences proprioception during active movement. Here, we addressed t