-17-
å-mrange 1 4: in this example, our mask dataset ROI_fred+tlrc has four ROIs draw within it.  This option tells the program to take those 4 ROIs and compute an overall average (collapsed across ROIs) for each voxel that falls within the ROIs
í The exact numbers to average is determined by the sub-bricks (#2 and #4) specified in our functional dataset, func_fred+tlrc

åAdd the -q option to the above command line to suppress the voxel count printout (in this example, -q suppresses Ò[43450 voxels]Ó from appearing in the shell
íE.g., 52.3674
§40.186
íThis way you can copy and paste the single column of averages to a 1D (i.e., text) file for later use in AFNI or other programs like Excel

åInstead of having the results of 3dmaskave spewed into the shell, you can redirect ( > )the results into a text file and save them for later use:
å
å3dmaskave -mask ROI_fred+tlrc -mrange 1 3  -q     \
å    Ôfunc_fred+tlrcÕ[2,4]Õ > fred_ROI1-3.1D