The median nerve controls arm movement and sensation. Peripheral nerves are those outside the brain and spinal cord. The study, “Sensory Nerve Action Potential Analysis in a Cohort of Patients With ...

An MRI revealed that Toronto Blue Jays right-hander Erik Swanson is dealing with a "median nerve entrapment" in his right arm, reports Keegan Matheson of MLB.com. The scan showed no structural ...