Combination of magnetoencephalography (MEG) and functional magnetic resonance imaging (FMRI) for neurosurgical mapping of the sensory and motor cortices

N. Nakasato, T. Inoue, A. Takahashi, A. Kanno, K. Hatanaka, H. Shimizu, T. Kumabe, T. Yoshimoto

Research output: Contribution to journalConference article

Abstract

Magnetoencephalography (MEG) and functional magnetic resonance imaging (FMRI) were applied to brain mapping in three normal volunteers and three patients with brain tumors. The central sulcus was identified by source localization of the somatosensory evoked potentials (SEFs) in all subjects. Functional abnormality was detected as reduced amplitude or latency delay of the SEF peaks. FMRI indicated multiple and extended regions of activation, such as primary motor, primary sensory, and supplementary motor cortices. The primary motor and sensory cortices were not activated due to the effect of the lesion of one patient. The highest activation was found far posterior to the central sulcus due to a large venous inflow effect in another patient.

Original languageEnglish
Pages (from-to)2209-2212
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume4
Publication statusPublished - 1998 Dec 1
EventProceedings of the 1998 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 6) - Hong Kong, China
Duration: 1998 Oct 291998 Nov 1

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Fingerprint Dive into the research topics of 'Combination of magnetoencephalography (MEG) and functional magnetic resonance imaging (FMRI) for neurosurgical mapping of the sensory and motor cortices'. Together they form a unique fingerprint.

  • Cite this