Value of multichannel epidural somatosensory evoked potentials in cortical mapping of primary sensorimotor areas
10.3760/cma.j.issn.1006-7876.2009.01.016
- VernacularTitle:多导硬脑膜外体感诱发电位对大脑皮质躯体运动感觉功能区的定位
- Author:
Dequan WANG
;
Yuping WANG
;
Yongjie LI
- Publication Type:Journal Article
- Keywords:
Evoked potentials,somatosensory;
Cerebral cortex;
Motor cortex;
Electricstimulation
- From:
Chinese Journal of Neurology
2009;42(1):56-59
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the value of muhichannel epidural somatosensory evoked potential (SEP) in cortical mapping of primary sensorimotor areas for electrode implantation of motor cortex electrical stimulation.Methods Intraoperative multichannel epidural SEP was recorded in 13 patients with intractable neuropathic pain.SEP mapping was used for determining the location of sensorimotor areas.Results The typical phase reversals of N20 and P20 were recorded and the location of the central sulcus and the primary sensorimotor area were accurately determined in 11 patients.The location of the primary sensorimotor failed to be determined in the other 2 patients because of the atypical SEP.Conclusion The intraoperative muhichannel epidural SEP is reliable in the cortical mapping.
