Comparison of magnetoencephalography, functional MRI, and motor evoked potentials in the localization of the sensory-motor cortex

T. Morioka, T. Yamamoto, A. Mizushima, S. Tombimatsu, H. Shigeto, K. Hasuo, S. Nishio, K. Fujii, M. Fukui

Research output: Contribution to journalArticle

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Abstract

To clarify the topographical relationship between peri-Rolandic lesions and the central sulcus, we carried out presurgical functional mapping by using magnetoencephalography (MEG), functional magnetic resonance imaging (f- MRI), and motor evoked potentials (MEPs) on 5 patients. The sensory cortex was identified by somatosensory evoked magnetic fields using MEG (magnetic source imaging (MSI)). The motor area of the hand region was identified using f-MRI, during a hand squeezing task. In addition, transcranial magnetic stimulation localized the hand motor area on the scalp, which was mapped onto the MRI. In all cases, the sensory cortical vein or the lack of any functional activation in the area of peri-lesional edema. MEPs were also unable to localize the entire motor strip. Therefore, at present, MSI is considered to be the most reliable method to localize peri-Rolandic lesions. [Neurol Res 1995; 17: 361-367] cortical vein or the lack of any functional activation in the area of peri-lesional edema. MEPs were also unable to localize the entire motor strip. Therefore, at present, MSI is considered to be the most reliable method to localize peri-Rolandic lesions.

Original languageEnglish
Pages (from-to)361-367
Number of pages7
JournalNeurological Research
Volume17
Issue number5
DOIs
Publication statusPublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

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