we are performing a study on brain gyrification using CAT12. I have two questions regarding ROIs.
#1 CAT12 allows to extract the mean gyrification values from already defined atlas-based regions. I was wondering if it was possible to extract such values also from a whole-brain significant cluster mask resulting from a groupwise comparison. We intend to correlate the local gyrification index from that region with each participant's behavioural performance. Does anyone have a suggestion on how to do it?
#2 CAT12 has a function called "analyze ROIs", which allows to compare data from ROIs, using the same design matrix as specified in a selected SPM.mat file. Unfortunately, only p-values are reported, but I can't find the correspective t-values and z equivalents. Where/How is it possible to find such information?
Thank you in advance for your help and support,