Dear SPM users
For correlation analysis at outside of SPM, I'd like to extract fMR values
of one sample t-test using VOI.
My questions are
1. If fMR values are extracted from the result map of one sample t-test
using VOI, what is the nature of the values? mean % signal change or beta...
2. There are 'adjusted' and 'predicted' option for VOI data extract. 'If I
want to do correlation analysis (outside of SPM) between the extracted fMR
values of one sample t-test and other values (e.g. ERP, clinical
variables...), which value does more make sense?
3. The extracted fMR values could be used either itself or demeaned value
(values minus mean value). Which one is more reasonable for correlation
analysis with other values?