Hi all,
I'm doing 1st-level analysis and I am a bit confused with the choice between scans and seconds in the model specification.
If I run my script with the option 'scans' and with the onsets given in the same unit, I do not have the same results (e.g., t-scores are very different) as when I choose the option 'secs' with the onsets then given in seconds.
I don't understand what I did wrong, or if I missed something.
Any hint?
Thanks for your help!
Yseult Hb
%================================================================
matlabbatch{1}.spm.stats.fmri_spec.dir = {RES_folder};
matlabbatch{1}.spm.stats.fmri_spec.timing.units = 'secs'; % 'scans' or 'secs'
matlabbatch{1}.spm.stats.fmri_spec.timing.RT = 2;
matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t = 32;
matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t0 = 31;
matlabbatch{1}.spm.stats.fmri_spec.bases.hrf.length = 32;
matlabbatch{1}.spm.stats.fmri_spec.bases.hrf.order = 1;
matlabbatch{1}.spm.stats.fmri_spec.bases.hrf.derivs = [0 0];
matlabbatch{1}.spm.stats.fmri_spec.volt = 1;
matlabbatch{1}.spm.stats.fmri_spec.mthresh = 0;
matlabbatch{2}.spm.stats.fmri_est.spmmat = {[RES_folder 'SPM.mat']};
matlabbatch{2}.spm.stats.fmri_est.method.Classical = 1;
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