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Force Perception At The Shoulder After A Unilateral Suprascapular Nerve Block, David Phillips, Peter Kosek, Andrew Karduna

Department of Exercise Science and Physical Education Scholarship and Creative Works

There are two key sources of information that can be used to match forces—the centrally generated sense of effort and afferent signals from mechanical receptors located in peripheral tissues. There is currently no consensus on which source of information is more important for matching forces. The corollary discharge hypothesis argues that subjects match forces using the centrally generated sense of effort. The purpose of this study was to investigate force matching at the shoulder before and after a suprascapular nerve block. The nerve block creates a sensory and muscle force mismatch between sides when matching loads. The torque matching accuracy …