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dc.contributor.authorAhlfors, Seppo P.
dc.contributor.authorHan, Jooman
dc.contributor.authorBelliveau, John William
dc.contributor.authorHämäläinen, Matti S.
dc.date.accessioned2011-04-29T02:18:55Z
dc.date.issued2010
dc.identifier.citationAhlfors, Seppo P., Jooman Han, John W. Belliveau, and Matti S. Hämäläinen. 2010. Sensitivity of MEG and EEG to Source Orientation. Brain Topography 23(3): 227-232.en_US
dc.identifier.issn0896-0267en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4879202
dc.description.abstractAn important difference between magnetoencephalography (MEG) and electroencephalography (EEG) is that MEG is insensitive to radially oriented sources. We quantified computationally the dependency of MEG and EEG on the source orientation using a forward model with realistic tissue boundaries. Similar to the simpler case of a spherical head model, in which MEG cannot see radial sources at all, for most cortical locations there was a source orientation to which MEG was insensitive. The median value for the ratio of the signal magnitude for the source orientation of the lowest and the highest sensitivity was 0.06 for MEG and 0.63 for EEG. The difference in the sensitivity to the source orientation is expected to contribute to systematic differences in the signal-to-noise ratio between MEG and EEG.en_US
dc.language.isoen_USen_US
dc.publisherSpringer USen_US
dc.relation.isversionofdoi:10.1007/s10548-010-0154-xen_US
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2914866/pdf/en_US
dash.licenseLAA
dc.subjectmagnetoencephalographyen_US
dc.subjectelectroencephalographyen_US
dc.subjectsuppression ratioen_US
dc.subjectcurrent dipoleen_US
dc.subjectradial source currenten_US
dc.titleSensitivity of MEG and EEG to Source Orientationen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalBrain Topographyen_US
dash.depositing.authorAhlfors, Seppo P.
dc.date.available2011-04-29T02:18:55Z
dash.affiliation.otherHMS^Radiology-Massachusetts General Hospitalen_US
dash.affiliation.otherHMS^Health Sciences and Technologyen_US
dc.identifier.doi10.1007/s10548-010-0154-x*
dash.contributor.affiliatedHan, Jooman
dash.contributor.affiliatedAhlfors, Seppo
dash.contributor.affiliatedBelliveau, John William


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