Dear fMRI-DCMers,

is there any literature or less formal knowledge about the validity of DCM for fMRI when subcortical regions are involved?

I am asking because of two things

1. empirical evidence (potentially due to ROI definition issues, see similar posting on this list [DARTEL-related])
2. work by Caroline Malherbe on functional connectivity (via sICA):
http://www.imt.liu.se/minew/Intern/Onlineproceedings/ISBI_2010/pdfs/0001169.pdf
where she describes that - at least in the basal ganglia - subcortical ROI time courses are a mixture of signals some of which correlate with cortical ones but others to more regional activity.

Any hints greatly appreciated.

Thank you.

Bw,

Helmut