Hi,
I read somewhere that I should change the microtime resolution and onset to the number of slices and the middle slice respectively if I did the slice timing preprocessing option.
In SPM, it says change it if I have only long TR. the TR that I have is 3.125 s.
The reason why I am asking this question is that I did the analysis with and without these changes (i.e, using and not using the default values). What I get is something different in terms of seeing the effects of the parametric modulation.
Can you please advice me on this issue and whether I should change them or not?
Thanks
AS
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