At the moment there is no way to combine modalities for VB-ECD and DCM. You can only work with each modality separately and compare the results.
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From: Jing Kan <[log in to unmask]>
Sender: "SPM (Statistical Parametric Mapping)" <[log in to unmask]>
Date: Thu, 26 May 2011 10:43:35
To: <[log in to unmask]>
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Subject: [SPM] Question about the "MEG" and "MEGPLANAR" modalities of Elekta system.
Dear SPM experts,
Thanks for concern! I am doing the "3D source reconstruction" with the MEG
data from Elekta system. As I know from the SPM tutorial, SPM treats the
MEG data of the Elekta system as two different modalities: "MEG" and
There are two methods used for 3D source reconstruction: "imaging",
"VB-ECD" and "DCM". The method "imaging" can let me select both "MEG" and
"MEGPLANAR" modalities for reconstruction. However, in the methods
"VB-ECD" and "DCM", I can only select either "MEG" or "MEGPLANAR" for
May I ask how can I deal with this two modalities in "VB-ECD" and "DCM".
How this selection will affect my reconstruction result?
Many thanks for your help in advance!