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- W2348696293 abstract "Both electroencephalogram (EEG) and magnetoencephalogram (MEG) provide unique neurophysiologic data not obtainable by other neuroimaging techniques.MEG has now emerged as a mature clinical technology. While both EEG and MEG can be performed with more than 100 channels, MEG recordings with 100 to 300 channels are more easily done because of the time needed to apply a large number of EEG electrodes. EEG has the advantage of the long-term video EEG recordings. MEG and EEG seem to complement each other for the detection of interictal epileptiform discharges. MEG selectively detects tangential sources. EEG measures both radial and tangential activity, although the radial components dominate the EEG signals at the scalp. Thus, while EEG provides more comprehensive information, it is more complicated to model due to considerable influences of the shape and conductivity of the volume conductor. Dipole localization techniques favor MEG due to the higher accuracy of MEG source localization compared to EEG when using the standard spherical head shape model. However, if special care is taken to address the above issues and enhance the EEG, the localization accuracy of EEG and MEG actually are comparable. The combined use of whole-head MEG systems and multichannel EEG in conjunction with advanced source modeling techniques is an area of active development and will allow a better noninvasive characterization of the irritative zone in presurgical epilepsy evaluation." @default.
- W2348696293 created "2016-06-24" @default.
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- W2348696293 date "2005-01-01" @default.
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- W2348696293 title "MEG and EEG in epilepsy therapy" @default.
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