I downloaded the preprocessed functional images from the Preprocessed Connectomes initiative which were processed using the C-PAC pipeline. According to the description on ABIDE Preprocessed (preprocessed-connectomes-project.org), these functional images have already been transformed into MNI space. However, when I check the data information using AFNI’s 3dinfo, it is still in the original space.
When I tried to extract the time series on the original data using MATLAB, it failed. However, if I use SPM to reslice the functional image to the mask in the standard space, the extraction is successful.
But I’m not sure if this is the right thing to do and would like to ask for some opinions.