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KMID : 0311120010420010009
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Yonsei Medical Journal
2001 Volume.42 No. 1 p.9 ~ p.13
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The Central Conduction Time in Posterior Tibial and Pudendal Nerve Somatosensory Evoked Potentials
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Young Chul Choi
Yong Duk Kim/Won Joo Kim/Jin woo Yang/Joon Shik Moon
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Abstract
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The somatosensory evoked potentials (SEPs), following stimulation of both the posterior tibial nerve (PTSEP) and pudendal nerve (PNSEP), comprise of the lumbar negative, subcortical and cortical potential. These can be used to assess the long somatosensory pathway, including peripheral, intraspinal and intracranial conduction along the entire length. This study aimed to compare the central conduction time between the PTSEP and the PNSEP, and to investigate the relationship between the intraspinal and intracranial conduction time in the SEP pathway. The SEPs following stimulation of the posterior tibial nerve at the ankle and the pudendal nerve at the shaft of the penis were analyzed in 20 normal male subjects. The central conduction of the PNSEP was found to be slower than that of the PTSEP (p < 0.05). This difference is due to a delay in conduction rather than that of intracranial conduction.
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