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Journal of the Korean Academy of Rehabilitation Medicine 1986;10(2):3.
Study on Somatosensory Evoked Potential of the Korean Normal Adults -Using the median nerve stimulation-
Jin Ho Kim, M.D. , Chyung Ki Lee, M.D.
Department of Rehabilitation Medicine, Seoul National University Hospital
한국 정상성인의 Somatosensory Evoked Potential에 관한 연구(Ⅱ) -정중신경 SEP-
김진호, 이청기
서울대학교 의과대학 재활의학교실

Somatosensory evoked potentials(SEPs) are useful for the evaluation of the nervous system from peripheral receptor to cerebral cortex.

SEPs were recorded from 46 normal subjects (male=28, female=18), aged 15∼70 years(mean=41.9) using TECA 42 EMG system. Both median nerves were stimulated at wrist and recording electrodes were placedon C2(active) and Fz(reference) position of the international 10-20 EEG system. Following results were obtained.

1) The mean latencies of the No, N1, P1, N2, P2 were 15.4±0.97 msec, 18.7±0.91 msec, 23.5±1.76 msec, 31.7±2.25 msec, 42.6±3.02 msec respectively on the right side.

2) The mean amplitudes, N1P1 and N2P2 on the right side were 8.06±1.61㎶ and 5.85±1.90㎶ and NP/NP was 72.5%.

3) The N3 was neglected due to irregularity and inconsistency in shape.

4) Difference between the right and left and between the male and female for the latency and amplitude were not found, but N2P2/N1P1 of the male and female respectively were 79.8% and 67.9% on the right side.

5) According to aging, mean latencies were increased.

Key Words: Somatosensory evoked potential, Normal adult, Median nerve, Age, Sex


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