#2 individual voxel activation values

open
nobody
None
5
2014-01-02
2004-07-08
Kalyan Shastri
No

hi,
we plan to do a network analysis on a multi-subject
SPECT dataset with two experimental conditions
(control and task). our functional ROIs were defined
based on the average (across subject) contrast image.
we're now trying to set up a (covariance) matrix
of: "subject X condition X ROI X voxel". we've only been
able to get mean cluster activation values for the ROIs
(i.e. we could set up a matrix of: "subject X condition X
ROI mean", using SPM's "VOI data extraction").
is it possible, with MarsBaR or within SPM, to obtain
individual voxel activation (normalized) values for all
voxels within an ROI, for each individual subject in each
experimental condition?
thank you.

Discussion