 |
 |
When you select the files, change the field that says "1", to maybe "1:1000". In SPM, the individual volumes used for the analysis are selected, rather than the files themselves. Best regards, -John On Tuesday 24 March 2009 02:26, Heida Maria Sigurdardottir wrote: > Hi everyone. > > I am new to fMRI analysis and to SPM5, so I've been having some problems > with which I hope you can help me. My biggest problem seems to have to do > with my NIFTI images (or that's what I think might be happening). I have 14 > EPI runs of 120 TRs each, and I have 14 .nii files (one for each run). > However, SPM5 seems to treat each .nii image as one TR, and not one run. > The reason I believe that is that a) I only have one value instead of 120 > per run for each of my six estimated movement parameters in the realignment > step, b) my design matrix acts as if e.g. a block with an onset at 0 and > duration of 2 TRs lasts for more than one .nii file (see attached pic). I > am not convinced that the error is necessarily specific to SPM5, but I just > don't know how to deal with it. I was hoping that someone could give me > good advice. > > -- Heida Maria > --------------------------------------------------------------------------- >----------- Heida Maria Sigurdardottir > Department of Neuroscience > Brown University > > Phone Number: (401) 477 4240 > Tarrlab Website: http://www.tarrlab.org > Sheinberg Lab Website: http://www.sheinberglab.org > --------------------------------------------------------------------------- >-----------