Thank you, Dear, Ptaylor. I initially used the MNI_Glasser_HCP_v1.0 atlas for the same purpose, it has a total of 360 ROI's which I confirmed from
the original paper of that Atlas "we delineated 180 areas per hemisphere" [1]. So, 180x2=360 ROI's in total, but when I checked from the following command using AFNI :
3dinfo -labeltable MNI_Glasser_HCP_v1.0.nii.gz
They showed me 1 extra number which I don't know where it comes from.

<VALUE_LABEL_DTABLE
ni_type="2*String"
ni_dimen="361" >
.......
but the number of ROI names present in the output of the above command was 360.

I have used 3dreseample command to resample the atlas to the fMRI scale.

I repeat the same procedure with the caez_ml_18 Atlas and extract/save all the ROIs names to a text file and it counts to 115 using the following command:
3dinfo -labeltable MNI_caez_ml_18+tlrc

Which produces 115 ROI string names.
<VALUE_LABEL_DTABLE
ni_type="2*String"
ni_dimen="115" >
"4" "Right_Superior_Frontal_Gyrus"
"10" "Right_Middle_Orbital_Gyrus"
.........

I am wondering about this 1 extra value.

[1] Glasser, Matthew F., et al. "A multi-modal parcellation of human cerebral cortex." Nature 536.7615 (2016): 171-178.



Edited 2 time(s). Last edit at 09/06/2022 04:57PM by Muhammad Shahzaib.