Referred pain Because of this convergence and the fact that the spinal neurons are most often activated by inputs from the skin activity evoked in spinal neurons by input from deep structures is mislocalized by the patient to a place that is roughly coextensive with the region of skin innervated by the same spinal segment Coronary ischemic pain usually radiates to medial side of arm and fingers, which were supplied by 6th-8th cervical (or T1 T2)over the left side• Because of this convergence and the fact that the spinal neurons are most often activated by inputs from the skin, activity evoked in spinal neurons by input from deep structures is mislocalized by the patient to a place that is roughly coextensive with the region of skin innervated by the same spinal segment • Coronary ischemic pain usually radiates to medial side of arm and fingers, which were supplied by 6th~8th cervical (or T1~T2) over the left side Referred pain