[Freesurfer] activation patterns and par files

2007-10-18 Thread Cameron Ellis
Hi all, I have run two different group analyses in stable3. All of the analysis parameters between the two are identical except that one uses a paradigm file containing three conditions and the other uses a paradigm file containing five conditions. The first three conditions in the analysis using t

RE: [Freesurfer] model for pair-T test

2007-10-18 Thread Wang, Xin
Hello, Doug, I ran into an error when I ran mri_glmfit after I finished mris_preproc --paired-diff. ERROR: dimension mismatch between y and x. y has 5 inputs, x has 10 inputs. I think it is because the mris_preproc -paired-diff generated 5 inputs of difference within 5 pairs, but my FSGD f

RE: [Freesurfer] activation patterns and par files

2007-10-18 Thread Don Hagler
Every time point not specified as a condition would be counted as baseline, right? So does that mean then, that you have a different baseline for your 3 and 5 condition analyses? From: "Cameron Ellis" <[EMAIL PROTECTED]> To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] activation pat

RE: [Freesurfer] activation patterns and par files

2007-10-18 Thread Cameron Ellis
Hi Don, yes, I figured this was the case. When I run an roi analysis using both sets of data I do indeed differrent results for % signal change, which makes sense because each condition is compared to baseline and my baselines are different.but shouldn't creating a contrast of two conditions give t