Buettner U W, Timmann D
Neurologic Clinic, University of Tuebingen, F.R.G.
Electroencephalogr Clin Neurophysiol Suppl. 1990;41:309-13. doi: 10.1016/b978-0-444-81352-7.50037-6.
Forty normal subjects were investigated with the somatosensory evoked potential technique following stimulation of the posterior tibial nerve in order to yield information upon normal values, and especially the origin of the cervical potential. Subsequently an electrophysiologic localization of tumours along the spinal cord was attempted in 18 patients with spinal tumours. In C2 recordings with Fz reference 3 components, N28, N30, and N34, are visible. Simultaneous cortical and cervical recordings with mastoid, knee, and neck references suggest a cranio-cervical origin of N28, a subcortical origin of N30 and a thalamic or thalamo-cortical origin of N34. In patients, the lumbar spinal cord potentials regularly yielded a useful additional information with respect to the tumour site. The cervical potentials added in 5 out of 18 patients additional information localizing the tumour within the spinal cord or brain-stem.
为了获取正常值信息，特别是颈部电位的起源，对40名正常受试者在刺激胫后神经后采用体感诱发电位技术进行了研究。随后，对18例脊髓肿瘤患者尝试进行沿脊髓肿瘤的电生理定位。在以Fz为参考的C2记录中，可以看到3个成分，即N28、N30和N34。同时以乳突、膝盖和颈部为参考进行皮层和颈部记录，提示N28起源于颅颈部位，N30起源于皮层下，N34起源于丘脑或丘脑皮层。在患者中，腰段脊髓电位通常能提供关于肿瘤部位的有用额外信息。在18例患者中，有5例颈部电位提供了将肿瘤定位在脊髓或脑干内的额外信息。
