I use FSL to analysis my fMRI data. I got data contains 15 subject, each of them contains two condition (drug/placebo). They underwent 4 block of task which is encoding words pairs.
Now I know how to looking at are there any regions show linear change across four blocks by setting a contrast(-3 -1 1 3/3 1 -1 -3). But confused on how to compare the linear effect of regions between groups.
Does anyone know how to set a model and contrast to look at the interaction effect of gooup and 4 blocks
Command used (and if a helper script was used, a link to the helper script or the command generated):
In first level, the Z-stat map for each individual at each seperate block are computed.