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Journal of the Korean Academy of Rehabilitation Medicine 1989;13(2):12.
Electrodiagnostic Study of the Sympathetic Skin Response (SSR)
Chong Tae Kim, M.D., Min Jei Cho, M.D. , Sae-il Chun, M.D.
Department of Rehabilitation Medicine, Yonsei University College of Medicine
교감신경 피부반응에 대한 전기진단적 연구
김종태, 조민제, 전세일
연세대학교 의과대학 재활의학교실

Electrodiagnostic study of sympathetic skin response (SSR) was performed on 40 normal subjects who had no history of sympathetic dysfunction.

The major results were as follows:

1) Stimulating the left median nerve at the wrist, the latencies of the SSR recorded at both palms and soles were: 1.37±0.18 sec (Rt. palm), 1.26±0.15 sec (Lt. palm), 1.66±0.20 sec (Rt. sole), and 1.69±0.18 sec (Lt. sole), respectively.

2) Stimulating the right tibial nerve at the ankle, the latencies of the SSR recorded at both palms and soles were: 1.66±0.22 sec (Rt. palm), 1.62±0.30 sec (Lt. palm), 1.48±0.26 sec (Rt. sole), and 1.62±0.26 sec (Lt. sole), respectively.

3) The Amplitudes of the SSR recorded at the palm were greater than those recorded at the sole regardless of the site of stimulation.

4) The conduction velocity of the postganglionic sympathetic nerve in upper extremity (1.42±0.25 m/sec) was faster than in lower extremity (1.06±0.25 m/sec).

Key Words: Sympathetic skin response, EMG, Latency, Conduction velocity


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