T. Morioka et al., COMPARISON OF MAGNETOENCEPHALOGRAPHY, FUNCTIONAL MRI, AND MOTOR EVOKED-POTENTIALS IN THE LOCALIZATION OF THE SENSORY-MOTOR CORTEX, Neurological research, 17(5), 1995, pp. 361-367
To clarify the topographical relationship between peri-Rolandic lesion
s and the central sulcus, we carried out presurgical functional mappin
g by using magnetoencephalography (MEG), functional magnetic resonance
imaging (f-MRI), and motor evoked potentials (MEPs) on 5 patients. Th
e sensory cortex was identified by somatosensory evoked magnetic field
s using MEG (magnetic source imaging (MSD)). The motor area of the han
d region was identified using I-MRI, during a hand squeezing task. In
addition, transcranial magnetic stimulation localized the hand motor a
rea on the scalp, which was mapped onto the MRI. In all cases, the sen
sory cortical vein or the lack of any functional activation in the are
a 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; 1
7: 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 th
e most reliable method to localize peri-Rolandic lesions.