• Journal of Korean Neurosurgical Society
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• v.51 no.5
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• pp.286-291
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• 2012

Objective : To investigate the change of latency of cervical dermatomal somatosensory evoked potential (DSEP) according to stimulation intensity (SI) and severity of carpal tunnel syndrome (CTS). Methods : Stimulation sites were the C6, C7, and C8 dermatomal areas. Two stimulation intensities $1.5{\times}$sensory threshold (ST) and $2.5{\times}ST$ were used on both normal and CTS patients. Results : In moderate CTS, the latencies of C6 and C7 DSEP during $1.5{\times}ST$ SI and those of C7 DSEP during $2.5{\times}ST$ SI were significantly delayed compared with the values of normal subjects. Significant correlation between the latency of C7 DSEP of $2.5{\times}ST$ stimulation and the median sensory nerve conduction velocity was observed. Conclusion : We suggest that these data can aid in the diagnosis of cervical sensory radiculopathy using low stimulation intensity and of those who have cervical sensory radiculopathy combined with CTS patients.

• The Journal of Korean Physical Therapy
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• v.14 no.4
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• pp.64-74
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• 2002

The SSEP(SomatoSensory Evoke Potentials) test is a valid and repeatable technique which correlates with clinically assessed joint position & vibration sense, skin touch & pressure sense. Also SSEP study is a simple and quantitative test, and has been used to evaluate the sensoty system along the somatosensory pathway from peripheral sensory receptor to the cortex. The ascending pathway of SSEP has been know to be posterior column-lemniscal pathway, but not without controversy. There are two kind of test mathods : one of test is median nerve SSEP and other test is posterior tibial nerve SSEP. Recently, SSEP used to performed to evaluate the usefulness of dermatomal SSEP(D-SSEP) and segmental SSEP(5-SSEP) for the diagnosis of lumbasacral radiculopathy, and it can be measure of ingual ahd palatine evoked potentials & indicator of medullary function useful for the diagnosis of brain death.