[Freesurfer] longitudinal study in counterbalance design

2012-05-07 Thread lordowen
Hi all: We performed a thickness change study which related to the menstrual cycle. We scanned subjects during different menstrual phases in a counterbalance manner. Thus when we conduct a longitudinal analysis, we need to set time point according to the actual scanning order (i.e., 1st scan as Tp

Re: [Freesurfer] longitudinal study in counterbalance design

2012-05-08 Thread Martin Reuter
Hi, I'd recommend to use time for the order when processing. The order of time points is not relevant in the longitudinal stream but this way the design is more balanced. Best Martin On May 7, 2012, at 23:59, lordowen wrote: > Hi all: > > We performed a thickness change study which related

Re: [Freesurfer] longitudinal study in counterbalance design

2012-05-09 Thread Douglas N Greve
In terms of just giving it a name, it should not matter since all of the time points are treated equally in the longitudinal stream. When you go to analyze it, the order will make a difference (and I assume you'll use phase). doug On 05/07/2012 11:59 PM, lordowen wrote: > Hi all: > > We performed