Dear Guillaume,
thank you very much,
what I mean about deleting data was regarding data that have a problem. how can I figure out which fMRI data is not good and I must remove it from the dataset (before preprocessing data or in preprocessing steps or after preprocessing)?
I defined the centers coordinate of the WM and CSF the same as spm manual but I considered the radius of WM, 7mm and the radius of CSF 5mm. although in manual considered radius 6mm as an example.
Best regards,
soroor
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