Did you have un account the realignment regressors? If that, you would have a design matrix composed by 4 (conditions) + 6 regressors + 1 constant = 11 terms for each session, but 12... no idea, Sorry!
Best,
> El 29 jun 2017, a las 17:59, MMBB <[log in to unmask]> escribió:
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> Hello All,
> I firstly apologize if the answer to this question is obvious. I could not figure it out from the manual or tutorials. If anyone could provide me with a link to somewhere that specifies the answer, I would be very grateful.
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> I am using First Level Analyses to assess activation within a particular cortical region within each of my subjects. This is necessary as this particular region has been shown to be highly variable across individuals (hMT+).
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> I have 4 conditions (motion, static, fixation, rest). However, when I input my contrasts [1 0 0 0] in the contrast manager, the resulting design matrix shows three columns for each condition. As such, in order to isolate the conditions I need to look at, I need to input the following: [1 1 1 0 0 0 0 0 0]. This occurs across participants and across different sessions (which have varying number of trials).
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> I do not know why this is occurring as according to the manual, only one column should show for each condition, not three.
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> Any information would be greatly appreciated!
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