Acompcor white matter mask includes subcortical structures

Summary of what happened:

aCompCor mask for white matter includes subcortical structures and may affect subsequent analysis targeting those subcortical structures.

Command used (and if a helper script was used, a link to the helper script or the command generated):

/opt/conda/envs/fmriprep/bin/fmriprep --fs-license-file /work/freesurfer/license.txt /work/PhantomPainBrain /work/PhantomPainBrain/derivatives/fmriprep participant --participant-label AMP08 -w /work/temp_data_PhantomPainBrain --mem-mb 60000 --omp-nthreads 12 --nthreads 16 --longitudinal --ignore slicetiming --fd-spike-threshold 0.5 --dvars-spike-threshold 2.0 --bold2t1w-dof 9 --output-spaces T1w MNI152NLin6Asym:res-2 fsnative fsLR --longitudinal --fs-subjects-dir /work/PhantomPainBrain/derivatives/fmriprep/sourcedata/freesurfer --debug compcor --dummy-scans 0 --derivatives /work/PhantomPainBrain/derivatives/fmriprep --project-goodvoxels --cifti-output 91k --medial-surface-nan

Version:

<23.2.1>

Environment (Docker, Singularity / Apptainer, custom installation):

Singularity/Apptainer

Data formatted according to a validatable standard? Please provide the output of the validator:

BIDS validated dataset

bids-validator@1.14.1
	e[33m1: [WARN] The recommended file /README is very small. Please consider expanding it with additional information about the dataset. (code: 213 - README_FILE_SMALL)e[39m
		./README

e[36m	Please visit https://neurostars.org/search?q=README_FILE_SMALL for existing conversations about this issue.e[39m

        e[34me[4mSummary:e[24me[39m                    e[34me[4mAvailable Tasks:e[24me[39m        e[34me[4mAvailable Modalities:e[39me[24m 
        4207 Files, 165.03GB        VibStim                 MRI                   
        40 - Subjects               rest                                          
        4 - Sessions                VibStimWrong                                  
                                    Resting                                       

Screenshots / relevant information:

sub-SUB_desc-preproc_T1w.nii.gz

fmriprep_23_2_wf/sub_SUB_wf/bold_ses_BRpost_task_rest_wf/bold_confounds_wf/acc_msk_bin/mapflow/_acc_msk_bin1/acompcor_wm_trans_masked_masked.nii.gz

derivatives/fmriprep/sourcedata/freesurfer/sub-SUB/mri/aseg.mgz

I realize that I didn’t formulate well my question: Does anyone looking at subcortical activations uses fmriprep’s aCompCor method to denoise their bold signal? Are there specific strategies within fmriprep to ensure that the acompcor WM mask do not include subcortical structures?

Thank you for your help!