Hello everyone!

I was wondering if you could help me with this analysis to my FA images in the Glm.
When I do a two sample unpaired t-test analysis i included two EV's one for each group. If i want to include a covariate (e.g. age) i included a third EV, etc.

I was wondering if there is any way to make correlations in the GLM. The way i am now correlating with FA data is extracting the average value of each image (fslmeants) and correlating this value with another feature (e.g. a score in a test) using SPSS. Is that way to correlate correct? or is there any better way to correlate maybe with glm in order to observe the image results of this correlation?

Thank you!

Patricia.