Dear Serena,
To do this you need to use contrast masking (a button in the Post-Stats tab) with the "Z>0"
option, choosing to mask the F-test result by a t-contrast (which you need to setup before)
that is on the EV associated with the canonical HRF. This will restrict the F-test results to
only those voxels where the main response to the canonical HRF is positive.
All the best,
Mark
On 4 Jul 2012, at 16:53, sere f wrote:
> Dear FSL users,
> I have generated 3 basis set functions using FLOB in order to obtain canonical HRF, its temporal derivative and its dispersion.
> I turn on F-test but in the fzstat map it is not possible to distinguish activation and deactivation.
> how can I do?
>
> Thanks for any advice.
>
> Serena
|