[Freesurfer] Effect size

2013-09-17 Thread Chung, Yoonho
Hi all, Where can I find the effect size file(.mgh) after running mri_glmfit when doing group analysis (control vs patients adjusting for age and sex)? Somewhere in the wiki said gamma.mgh is the surface overlay for effect size. Is this true? If not, how would I compute one? Yoon _

[Freesurfer] Effect size

2022-11-30 Thread Lyna Mariam El Haffaf
External Email - Use Caution Hi! I'm taking the liberty of writing another email on this subject, as I didn't get a reply to my previous email. My colleagues and I performed a general linear model with FreeSurfer mri_glmfit for whole brain analysis in intergroup comparison (g2

Re: [Freesurfer] Effect size

2013-09-17 Thread Douglas Greve
what do you mean exactly by "effect size"? gamma.mgh is the contrast value (C*beta) doug On 9/17/13 8:01 PM, Chung, Yoonho wrote: > Hi all, > > Where can I find the effect size file(.mgh) after running mri_glmfit when > doing group analysis (control vs patients adjusting for age and sex)? > S

Re: [Freesurfer] Effect size

2022-12-12 Thread Douglas N. Greve
did mri_glmfit create a file called pcc.mgh? If so, that is the partial correlation coef (R). On 11/30/2022 6:31 AM, Lyna Mariam El Haffaf wrote: External Email - Use Caution Hi! I'm taking the liberty of writing another email on this subject, as I didn't get a reply to my previous

[Freesurfer] effect size for conjunction analyses?

2014-05-02 Thread Caspar M. Schwiedrzik
Hi! I am doing some conjunction analyses (Nichols et al.) on my fMRI data, and I was wondering whether anyone can make a recommendation how to display effect sizes for this kind of analyses? Would you show the effect size estimate corresponding to the p-value that is chosen, an average, or anything

Re: [Freesurfer] effect size for conjunction analyses?

2014-05-02 Thread Douglas Greve
Hmmm, I'm not sure an effect size makes sense. I guess I would use the one from the chosen p-value doug On 5/2/14 12:52 PM, Caspar M. Schwiedrzik wrote: Hi! I am doing some conjunction analyses (Nichols et al.) on my fMRI data, and I was wondering whether anyone can make a recommendation ho

[Freesurfer] Effect size, Plotting and Heat maps

2022-11-17 Thread Lyna Mariam El Haffaf
External Email - Use Caution Dear Freesurfer team, My colleagues and I performed a general linear model with FreeSurfer mri_glmfit for whole brain analysis in intergroup comparison (g2v1) with a Monte-Carlo correction. I'd like to get the effect size of the analysis and I was

[Freesurfer] effect size for cortical thickness changes

2011-03-10 Thread Ritobrato Datta
Hello All, Are there reports of studies of cortical thickness changes using freesurfer which report effect sizes for the ROIs of interest ie how much of a change in millimeters was observed as opposed to p-values reported. Please let me know. Thanks a lot Ri __

Re: [Freesurfer] effect size for cortical thickness changes

2011-03-11 Thread Lena Palaniyappan
Hi Ri Have a look at Gina Kuperberg's paper on cortical thickness in schizophrenia - she reports effect sizes Hope the rest is well Lena On 11/03/2011 07:17, "Ritobrato Datta" wrote: Hello All, Are there reports of studies of cortical thickness changes using freesurfer which report effect

Re: [Freesurfer] effect size for cortical thickness changes

2011-04-07 Thread Emily Rogalski
Can you provide the full reference for the Kuperberg article? On Fri, Mar 11, 2011 at 5:49 AM, Lena Palaniyappan < lena.palaniyap...@nottingham.ac.uk> wrote: > Hi Ri > > Have a look at Gina Kuperberg’s paper on cortical thickness in > schizophrenia – she reports effect sizes > > Hope the rest is

Re: [Freesurfer] effect size for cortical thickness changes

2011-04-07 Thread Bruce Fischl
Hi Ri, it's on our wiki and should be pretty easy to find there. It's on schizophrenia Bruce On Thu, 7 Apr 2011, Emily Rogalski wrote: > Can you provide the full reference for the Kuperberg article? > > On Fri, Mar 11, 2011 at 5:49 AM, Lena Palaniyappan < > lena.palaniyap...@nottingham.ac.uk>

[Freesurfer] Effect Size from 2 group comparison of thickness in QDEC with 1 nuisance covariate

2012-12-21 Thread Josef Ling
I would like to calculate an effect size at each vertex for a two group comparison of thickness in QDEC in which a single nuisance covariate was used. Is there a way to do this with the output from QDEC such that the values are covariate adjusted? thanks ___