Re: [Freesurfer] problem with contrast in 1st-level analysis

2019-01-09 Thread xi star
External Email - Use Caution Hi, Doug I find two mistakes which may affect the final output after going through FSFAST tutorial again. first, the onset time of each block is wrong. the *original *parameter file is 0 1 16 1 3D 17 0 16 1 FIXATION 33 2 16 1 ZERO-DISPARITY 49 0 16 1 FI

Re: [Freesurfer] problem with contrast in 1st-level analysis

2019-01-09 Thread Greve, Douglas N.,Ph.D.
did you look at the zero-disparity vs fixation contrast? Can you send your paradigm file? Can you send pictures? On 1/9/19 12:26 AM, xi star wrote: > > External Email - Use Caution > > Hi! FS Experts! > In the fMRI experiment, there are 2 conditions: > 1#  3D picture > 2#  zero disparity

[Freesurfer] problem with contrast in 1st-level analysis

2019-01-08 Thread xi star
External Email - Use Caution Hi! FS Experts! In the fMRI experiment, there are 2 conditions: 1# 3D picture 2# zero disparity picture interleaved with fixation block (0). To compare 3D-vs-zero disparity, I used command: mkcontrast-sess -a 1 -c 2 -nosumconds but the results showe