afni.nimh.nih.gov

Hello AFNI

I am trying to correlate my concatenate CBF_maps of 41 subjects with a clinical score. I am using 3dTcorr1D with the -mask flag. I am confused because it seems that the correlations are not made inside the mask I am giving to the program, what am I doing wrong? Attached is a picture of my mask (in red) and my correlation results (in blue)

Here is my command:

3dTcorr1D -prefix CBFcorrICG CBFmaps_all.nii correlationICG.1D -pearson -mask GMmask__MNI152_2009_noCerebellum_final.nii

Here is my output text:

++ 3dTcorr1D: AFNI version=AFNI_19.3.18 (Dec 27 2019) [64-bit]
+ reading dataset file /scratch/global/lbohorquez/Brianna/Grief/CBFmaps_all.nii
+ reading 1D file /scratch/global/lbohorquez/Brianna/scripts/Luisa/correlationICG.1D
+ loading dataset /scratch/global/lbohorquez/Brianna/Grief/CBFmaps_all.nii into memory
++ Start correlations: 902629 voxels X 1 time series(41); 1 threads
^[[7m*+ WARNING:^[[0m THD_Tcorr1D: 674146 voxels skipped because were constant in time
++ Wrote dataset: ./CBFcorrICG+tlrc.BRIK


My 1D file is:
29
9
2
5
6
6
2
13
14
15
25
16
10
15
16
20
4
30
31
31
38
30
36
33
60
33
43
32
40
33
40
35
39
42
51
72
32
32
33
42
41