Hello,

I ran the following analysis to target task-specific voxels at a certain contrast and offset.

func2roi-sess -roidef dACC10_lh -analysis EMerror -anatlabel dACC-lh -maskcontrast ASevfix -maskframe 5 -maskthresh 1 -masktail pos -maskmap sig -sf Subject_files/MTHFRn18-list -d $SUBJECTS_DIR

We would like to create a functional constraint including only the 25% most active voxels (top quartile).

Is there a command that can achieve this?

Thanks,

Dave Brohawn