High sigma of the global signal

Summary of what happened:

The output gives me a too high sigma of the global signal. Is it normal?

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

echo Start
for sub in 20230414ITM1076593 20230414ZMZ1134903 20230420FG1104049 20230427MASV1120029 20230502ETC1026699 20230502MO1129419 20230504FMBSG1126766 20230511PG1029342 20230515OIB1031145 20230516ASO1166506 20230522JMFB1147518 20230523MGSL1166746; do 
fmriprep-docker /home/leandro/ELSA/bids /home/leandro/ELSA/derivatives participant --participant-label ${sub} --fs-license-file /home/leandro/license.txt --output-spaces MNI152NLin2009cAsym --stop-on-first-crash -w /home/leandro/ELSA/workdir --write-graph --use-syn-sdc


fMRIPrep version 23.1.4

Environment (Docker, Singularity, custom installation):


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


Relevant log outputs (up to 20 lines):

Please, see the image below.

Screenshots / relevant information:

MRI equipment: Phillips Achieva 3T