I've done a volume-based task functional connectivity analysis involving a 3dTCorrMap step. Now I want to do replicate it in surface space. AFNI/SUMA seem to require that each hemisphere is analyzed separately -- is that correct? I'd rather have a merged dataset so I can use operations like 3dTCorrMap across the whole brain (both hemispheres) at once.

Below is my afniproc code that results in a dataset for each hemisphere. Any suggestions on how it can be modified to produce one dataset covering both hemispheres? (I tried changing _?h.spec to _both.spec and that didn't work....) Thanks.

# afni_proc.py -subj_id ${name}.surf.v${version}                            \
#                     -blocks align volreg surf blur scale regress  \
#                     -copy_anat ${name}/SUMA/brainmask.nii                \
#                     -dsets ${name}/${name}_run?.tcat+orig.HEAD                        \
#                     -surf_anat ${name}/SUMA/${name}_SurfVol.nii                \
#                     -anat_has_skull no                                   \
#                     -surf_spec ${name}/SUMA/std.141.${name}_?h.spec                      \
#                     -surf_anat_aligned yes \
#                     #-tcat_remove_first_trs 3                             \
#                     -align_opts_aea -giant_move                          \
#                     -volreg_align_to third                               \
#                     -volreg_align_e2a                                    \
#                     -blur_size 8                                         \
#                     -regress_stim_files pitchstims.txt timestims.txt bothstims.txt   \
#                     -regress_stim_labels pitch time both                         \
#                     -regress_basis 'NONE'   \
#                     -regress_stim_types file \
#                     -regress_use_stim_files \
#                     #-regress_motion_per_run                              \
#                     -regress_censor_motion 0.5                           \
#                     -regress_opts_3dD                                    \
#                         -jobs 2                                          \
#                         -gltsym 'SYM: pitch time both' -glt_label 1 'all_gt_rest'
# 
# tcsh proc.${name}.surf.v${version}