There are only zero values in my statistical results (T maps) of first-level analysis. I’ve reviewed the beta and contrast maps, and they appear normal.
I’ve re-run all preprocessing steps for this subject, but the all-zero issues persist.
The description in the file header of the spmT files seems unusual:
descrip: 'SPM{T_[0.9]} - contrast 2: effect1'
Is the number 0.9 representing the degrees of freedom for the t-test?
The analysis code for all subjects are the same. And other subjects’ contrast results look fine and even perfect.
Could you experts help me with the all-zero issues?
Thank you very much!