Hello,
We have an event related design containing 5 sessions, each session composed of 30 trials, each trial lasting 11 seconds, TR 2.5, resulting in 132 WHV per session. For each trial we obtain a rating (1-3) from the subject. Therefore, in addition to comparing different trial types in a classical way, what we would also like to do is perform a regression of the subjective responses with activation patterns. In essence, it would be much like adding in the 132 realignment movement parameters. Our question, however, is that we only have 30 subjective responses, one for each trial (rather than one value per WHV as with realignment parameters), and hence are not sure how to set-up this kind of a regression.
Any help would be most appreciated!
Many thanks,
Peter
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