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Hi, I am new to the fmri analysis and also first time user of FEAT. I need your help on the full model setup. I have this dataset: * DATA: 1 subject, 1 session, 2 trials, 132 volumes for 1 trial, totally 132*2 = 264 volumes, TR = 4s, I use avwmerge to merge the 264 single slices to generate a 4D data and input to the FEAT. * EXPERIMENT DESIGN: 5 stimuli (5 original EVs ?) and their box designs are: trial#1: off - EV3 - off - EV1 - off - EV4 - off - EV2 - off - EV5 - off trial#2: off - EV3 - off - EV5 - off - EV4 - off - EV1 - off - EV2 - off the off period in the notation above is about 40 sec, each EV last about 40 sec. trial 2 follows right after trial 1. My question: i am quite confused about the skip, off, phase entry in the Basic Shape part (say i use square), what is difference between skip and off? there is no delete volumes included in the dataset, i remove the delete volumes before i use avwmerge. I've read your tutorial and manual, still not sure what to do with my dataset, could you give me some suggestion ? thanks! Heather