Dear Michael,
> I'm sorry, Rik, but your first answer was correct. We used the
> timepoints of the fMRI triggers,
> measured with an external PC. Therefore I calculated the first parameter
> of timing as:
> timing(1) = TA / (nslices -1)
> and the second one as
> timing(2) = TR - TA
> This corresponds to the default calculation of TR in the case of batch
> processing.
> (calling spm_slice_timing with all parameters).
> By the way:
> the line
> eval(['P = P' num2str(subj) ';']);
> should be replaced with
> if nsubjects > 1, eval(['P = P' num2str(subj) ';']); end;
Sorry to follow up on such an old email, but I just remembered about this one.
I think this means that, assuming there is no gap between the end of the
collection of the last slice, and the beginning of the collection of the first
slice of the next volume, the TA should be specified as
TA = TR - TR/n
Is that correct? In which case should this be the default offered in the GUI,
instead of TA = TR?
Sorry if I misunderstood...
Thanks a lot,
Matthew
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