Dear Fuyu (CC'd mailing list)
With DCM for fMRI, you can only compare models with the same ROIs. This is because the free energy is predicated on the data - p(y|m) - and with fMRI the data are the ROIs. So one option would be to have models containing all regions, and having modulatory inputs on the left, right or bilateral connections.
From: #KWOK FU YU# [mailto:[log in to unmask]]
Sent: 19 April 2017 13:58
To: Zeidman, Peter <[log in to unmask]>
Subject: DCM families
I'm currently running a DCM study and was wondering if you could advice about the usage of families in DCM. Would it be possible to create families based on the laterality (i.e. Creating 8 models with left lateralized ROIs and another 8 with bilateral ROIs).
It'd be great if you could advice how I can go about doing such an analysis with DCM.