Implicit Body Representation of the Hand Enlarged by Repetitive Peripheral Magnetic Stimulation within the Boundary of a Real Hand

Deafferentation induced by local anesthesia causes a larger perceived area than the real of mouth, which, in perspective body representation, belongs to implicit representation. In this study, we applied repetitive peripheral magnetic stimulation (rPMS) on motor branch radial nerve participants’ non-dominant-side forearm induce extension movements wrist and fingers. This intervention was supposed increase proprioception brain had an enlargement effect representation hand our hypothesis. A total 39 participants were randomly allocated rPMS group (n = 19) or sham 20). Implicit measured simplified paradigm based proposal Longo Haggard that depicted locations fingertips metacarpophalangeal joints occluded hand, which they showed smaller hand. We compare main vs. its interaction with time setting four timepoints—before stimulation, right after 10 min 20 stimulation—to demonstrate possible short-lasting effect. Results general, significant especially ulnar side What is more, enlarged still within boundary might indicate identification role part.