Oh, you're using a task regressor? That will not be convolved with the HRF (or its derivative). The HRF/deriv only applies to paradigm files. If you want that in your task regressor, you will have to do it yourself.
On 6/7/2022 4:08 AM, Laura Doll wrote: > External Email - Use Caution > > Yes, I think so. That would mean, that the additional frames correspond to > the weights of the derivatives, right? > > But as I mentioned in the previous mail, they do have the same dimensions (in > matlab, checking the beta.vol). > Do you have any idea, what could have gone wrong? > I double checked for Copy/Paste errors or stuff like that, but didn't find > any. > > These are the exact terminal entries from last week: > > mkanalysis-sess -fsd bold -stc siemens -surface fsaverage lh -fwhm 5 -notask > -spmhrf 1 -TR 2 -polyfit 2 -analysis TestPupAvg.lh -per-run -taskreg PupAvg 1 > selxavg3-sess -s S05 -analysis TestPupAvg.lh > mkanalysis-sess -fsd bold -stc siemens -surface fsaverage lh -fwhm 5 -notask > -spmhrf 0 -TR 2 -polyfit 2 -analysis Test0PupAvg.lh -per-run -taskreg PupAvg 1 > selxavg3-sess -s S05 -analysis Test0PupAvg.lh > > And I loaded the results in Matlab with > beta1 = load_nifti('./S05/bold/TestPupAvg.lh/beta.nii.gz') > beta0 = load_nifti('./S05/bold/Test0PupAvg.lh/beta.nii.gz') > > Which results in equal beta1 and beta0. > > > Best, > Laura > > Am Freitag, 03. Juni 2022 19:04 CEST, "Douglas N. Greve" > <dgr...@mgh.harvard.edu> schrieb: > >> The -spmhrf 1 and 2 should have had additional frame in the beta.nii.gz. >> Is that what you are looking at? >> >> On 6/3/2022 4:51 AM, Laura Doll wrote: >>> External Email - Use Caution >>> >>> Okay, thanks. >>> But how can I find out the influence of the derivatives used? >>> I also tried to check the beta.nii.gz files for three different versions of >>> the analysis (-spmhrf 0 1 and 2), assuming that the weights for the >>> derivatives might be saved as additional dimensions, but the dimensions >>> were the same for all (163842x1x1x10). >>> >>> I feel like I am missing something here, or maybe there is some mistake in >>> my analysis? >>> This is what I used: >>> >>> mkanalysis-sess -fsd bold -stc siemens -surface fsaverage lh -fwhm 5 >>> -notask -spmhrf 0 -TR 2 -polyfit 2 -analysis Test0.lh -per-run -taskreg >>> PupAvg 1 >>> >>> selxavg3-sess -s S05 -analysis Test0.lh >>> >>> And Test1/2 with -spmhrf 1/2, respectively. >>> >>> Thanks in Advance! >>> >>> Laura >>> >>> >>> Am Mittwoch, 01. Juni 2022 16:50 CEST, "Douglas N. Greve" >>> <dgr...@mgh.harvard.edu> schrieb: >>> >>>> It uses the default parameters: >>>> tau1 = 1; >>>> tau2 = 1; >>>> ttp1 = 5*tau1; % 6 % >>>> ttp2 = 15*tau1; % 16 % >>>> c = 1/6; >>>> >>>> >>>> >>>> On 6/1/2022 4:27 AM, Laura Doll wrote: >>>>> External Email - Use Caution >>>>> >>>>> Hi Doug, >>>>> >>>>> Thanks for your hint where to find the actual function. >>>>> But how can I find which values were used in my analysis? I.e. the input >>>>> to this function? >>>>> >>>>> Best, >>>>> Laura >>>>> >>>>> Am Dienstag, 31. Mai 2022 17:19 CEST, "Douglas N. Greve" >>>>> <dgr...@mgh.harvard.edu> schrieb: >>>>> >>>>>> Look here $FREESURFER/fsfast/toolbox/fast_spmhrf.m >>>>>> >>>>>> On 5/25/2022 9:19 AM, Laura Doll wrote: >>>>>>> External Email - Use Caution >>>>>>> >>>>>>> Hi everyone, >>>>>>> >>>>>>> I need some help regarding the SPM-HRF with two derivatives: >>>>>>> Where can I find the actual function that was used for the analysis? 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