Having created a set of functional ROI masks from a one-sample t-test, I want to apply 2 of the functional ROI masks that are now in +tlrc coordinates to the 3d+time series data of 13 subjects that is in +orig space.
What is the best way to proceed: convert the +tlrc coordinate ROI mask to each person's +orig space (3dfractionize)? Or is it possible to convert the 3d+time series +orig for each subject into +tlrc space and keep the time series info using adwarp?
A more laborious procedure might include finding the x,y,z coordinate for each subject in +orig space with the max fit coefficient within the ROI space i am examing and draw a sphere of radius x as an ROI in +orig space. Then use 3dmaskdump to extract a value at each TR across all the voxels in the sphere?
Advice from AFNI wizards will be greatly appreciated?
philippe
