Your best bet would be to calculate difference images (post - pre) with imcalc or manually in matlab and then do a one-sample T test with age as a covariate.
-Mike
--
Mike Angstadt
Research Computer Specialist / PANLab Lab Manager
Department of Psychiatry / University of Michigan
(734) 936-8229
> -----Original Message-----
> From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] On Behalf Of Karina Lopez
> Sent: Wednesday, October 26, 2016 8:13 AM
> To: [log in to unmask]
> Subject: [SPM] paired t test and nuisance variables
>
> Dear all
>
> Sorry for the very basic question, I have a single group of subject who was scanned twice, before and after a month of motor training.
> I would like to perform a paired t test, using age as nuisance variable. In the factorial design specification (paired t test), do I need to
> insert the same age twice for each subject?
>
> Thanks for any help
>
> Karina
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