Re: [Freesurfer] slice timing correction and motion correction order

2013-02-01 Thread Douglas N Greve
Yes, it does MC then STC. This is a chronic problem that has never been solved. If you do STC first and there is significant motion, then the STC will be wrong. They really need to be done simultaneously. However, if you use an ascending or descending slice acq (instead of interleaved), then th

[Freesurfer] slice timing correction and motion correction order

2013-02-01 Thread Katie Bettencourt
Can you tell me the order of the slice timing and motion correction steps in preproc-sess (freesurfer v 4.5)? From the wiki it looks like motion correction is done first (For MC the input will be f and the output will be fmc For STC the input will be fmc and the output will be fmcstc". However, w

Re: [Freesurfer] slice timing correction and motion correction order

2013-01-31 Thread Douglas N Greve
On 01/31/2013 03:09 PM, Maryam Vaziri Pashkam wrote: > Hi Doug, > > Two questions: > 1) In fsfast preprocessing is STC done first or MC? is there a way to > control the order? MC is done first, then STC. There is not an easy way to control the order, though it may be possible. > > > 2) Also if S

[Freesurfer] slice timing correction and motion correction order

2013-01-31 Thread Maryam Vaziri Pashkam
Hi Doug, Two questions: 1) In fsfast preprocessing is STC done first or MC? is there a way to control the order? 2) Also if STC is not mentioned in the analysis line and only done in the preprocessing would the analysis be run on the STC data automatically? or should I specify STC in the analysi