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Hi Rosaleena, if you already have fisher-z correlations maps, just input them into the SPM 2nd level t-test. Not sure how you got the spmT-maps and why you would want to convert them to correlations though. I suggest you use the dpabi toolbox (http://rfmri.org/dpabi). It will create the maps for you and you can use the statistical analysis tool to run the t-test. greetings David Am Di., 23. Okt. 2018 um 18:06 Uhr schrieb Rosaleena Mohanty < [log in to unmask]>: > Hello SPM users, > > I am running two sample t-tests on SPM for group comparison using > seed-based functional connectivity from resting fMRI data. I understand > that typically we use con* images obtained at the first-level and feed them > to the second-level analyses. However, I wish to test group differences > based on Fisher z maps. So would it be right to convert spmT* images to a > correlation (r) map at the first-level which can then be converted to > Fisher z maps and fed into the second-level analyses? > > Any insight into this would be greatly appreciated. > Thank you! > > Best, > Rosaleena >