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Journal of the Korean Academy of Rehabilitation Medicine 1988;12(2):9.
Spinal Evoked Potential Peripheral Nerve Stimulation in Man
Sei Joo Kim, M.D., Hae Jung Hong, M.D. , Jae Ik Choi, M.D.
Department of Rehabilitation Medicine, Korea University College of Medicine, Seoul, Korea
한국 성인의 척수유발전위에 관한 연구
김세주, 홍혜정, 최재익
고려대학교 의과대학 재활의학교실

Spinal evoked potentials were recorded at the T12-L1 interspinous vertebral level with a standard monopolar EMG needle stimulating the posterior tibial nerve. In and average height adult, this level usually represents the nerve root's spinal cord entry for the posterior tibial nerve.

We studied the spinal evoked responses in 46 normal adults, mean age 29.31±6.03 years with range of 19-46 years.

The results were summarized as follows:

1) The potential was most consistent and reporoducible at the frequency filter bandwidth of 100-750 Hz.

2) The mean value of N1 latency and amplitude of potentials with the frequency band at 100-750 Hz was 19.53±0.76 msec and 2.30±1.46 uV, respectively.

3) There was a significant correlation between the delay of the N1 latency and the increase of subjects' height.

4) The mean N1 latency with the high frequency filter constant at 750Hz varying the low frequency filter 10 Hz to 100 Hz tended to decrease mildly but the amplitude decreased markedly.

5) The mean N1 latency with the low frequency filter constant at 10Hz varying the high frequency filter from 3000 to 500 Hz tended to increase, without significant change in amplitude.

Key Words: Spinal evoked potential, Somatosensory evoked potential, Posterior tibial nerve stimulation, Frequency filter bandwidth


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