[Freesurfer] questions about cortical thickness using qdec.

2014-01-08 Thread yaya ya
Dear Freesurfer experts, I have a question about cortical thickness analysis using freesurfer. Since I don't know how to post my question in freesurfer mailing list, that is why I am writing to you to get some help. Hopefully, my email will not cause you any troubles. My question is : When I com

[Freesurfer] Fwd: questions about cortical thickness using qdec.

2014-01-09 Thread yaya ya
expect the opposite pattern. That is, the results became thicker in the same region. Does this imply that there is an age effect? It means I could not use DOSS to do analysis, right? Best, Lickey On Thu, Jan 9, 2014 at 12:32 AM, Douglas N Greve wrote: > > On 01/08/2014 04:28 PM, yaya ya

Re: [Freesurfer] questions about cortical thickness using qdec.

2014-01-09 Thread yaya ya
ere is a > nonlinear relationship with age. > > doug > > > On 01/09/2014 03:54 AM, yaya ya wrote: > >> Dear Greve, >> >> Thank you very much for your response. I am now a little more clear, >> although I still have some further questions. >> >> Accord

Re: [Freesurfer] questions about cortical thickness using qdec.

2014-01-09 Thread yaya ya
. Any suggstions, feel free to let me know. On Thu, Jan 9, 2014 at 9:13 PM, Douglas N Greve wrote: > > On 01/09/2014 02:18 PM, yaya ya wrote: > > Dear Doug, > > > > I am sorry. It is my first time to post the message in this way. I am > > now used to it:) > > >

Re: [Freesurfer] questions about cortical thickness using qdec.

2014-01-09 Thread yaya ya
t insula label from > lh.aparc.annot (use mri_annotation2label), then pass this label to > mri_glmfit with --label > > doug > > > On 01/09/2014 03:52 PM, yaya ya wrote: > > Thanks, Doug. > > > > I just searched the list to find how to generate a mask. Let us say

Re: [Freesurfer] DOSS or DODS (Don't use DOSS with QDEC)

2014-01-13 Thread yaya ya
Hey All, I am sorry to jump into this discussion. I know how to check the slope difference between groups. I want to ask help from you to confirm that if difference in thickness in some brain areas arising from (0 0 1 -1) happens, it means that there is a group * age interaction, right? Then, th

Re: [Freesurfer] Correlation of symptom severity and significant clusters

2014-08-19 Thread yaya ya
Sorry to interrupt. I have a relevant question about the correlation analysis. If the age has been controlled for when surface-based analysis is done, do we need to controll for age again when we do subsequent correlational analysis in SPSS? On Tue, Aug 19, 2014 at 5:01 PM, Douglas Greve wrote:

[Freesurfer] questions about qdec, group and age interaction

2014-09-01 Thread yaya ya
Dear all, I encountered several questions when using freesurfer. Although I searched carefully in this mailing list, I am still not very clear about some issues. My issues are described below: Based on a bunch of information, I know that before describing my results, I need to check whether there