I proceeded to do a Monte Carlo simulation with this glm and pretty much the entire brain lit up. That is why I was wondering if the max vox being so large or the search space has anything to do with it. I used a vertex-wise p-value of 0.001 and a cluster-wise p-value of 0.05.
Thanks Koushik -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Douglas N Greve Sent: Tuesday, April 01, 2014 4:41 PM To: [email protected] Subject: Re: [Freesurfer] mri_glmfit question what does the max vox have to do with the search space? I'm not sure what the problem is here. dough On 04/01/2014 05:05 PM, Govindarajan, Koushik Athreya wrote: > > Dear all, > > I am trying to run a group analysis between 2 groups of subjects. I > did the mris_preproc and mri_surf2surf steps. When I set up my > mri_glmfit, the end of the output is: > > Reshaping mriglm->mask... > > search space = 74485.691578 > > DOF = 1344 > > Starting fit and test > > Fit completed in 0.481417 minutes > > Computing spatial AR1 on surface > > Residual: ar1mn=0.996928, ar1std=0.000586, gstd=7.275170, > fwhm=17.131715 > > Writing results > > wholegrp_contrast > > maxvox sig=1e+10 F=33202.6 at index 0 0 0 seed=1396057719 > > mri_glmfit done > > Now, from past experience, I know that the search space I get here is > large. Why does my maxvox sig say infinite? Am I missing something? > Has this happened to others? > > Thanks > > Koushik > > > > _______________________________________________ > Freesurfer mailing list > [email protected] > https://urldefense.proofpoint.com/v1/url?u=https://mail.nmr.mgh.harvar > d.edu/mailman/listinfo/freesurfer&k=yYSsEqip9%2FcIjLHUhVwIqA%3D%3D%0A& > r=4ebx%2BU4XzNnu4XA8t53Lt0n%2FTCuxbfN4Z1deUmAFsLg%3D%0A&m=kGMeR2ywj8DA > uHR01yI9QTMsjMPS46IV6f7syTjaz%2Bg%3D%0A&s=81b9e1c427d7eb86e493a947c849 > 88d7d2cfd16a9f560b17fef367fab26a81d9 -- Douglas N. Greve, Ph.D. MGH-NMR Center [email protected] Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://urldefense.proofpoint.com/v1/url?u=https://gate.nmr.mgh.harvard.edu/filedrop2&k=yYSsEqip9%2FcIjLHUhVwIqA%3D%3D%0A&r=4ebx%2BU4XzNnu4XA8t53Lt0n%2FTCuxbfN4Z1deUmAFsLg%3D%0A&m=kGMeR2ywj8DAuHR01yI9QTMsjMPS46IV6f7syTjaz%2Bg%3D%0A&s=049e461525bb720301d112ac9a283491de8012c3d2df276c4f12d51720caedef www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: https://urldefense.proofpoint.com/v1/url?u=ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/&k=yYSsEqip9%2FcIjLHUhVwIqA%3D%3D%0A&r=4ebx%2BU4XzNnu4XA8t53Lt0n%2FTCuxbfN4Z1deUmAFsLg%3D%0A&m=kGMeR2ywj8DAuHR01yI9QTMsjMPS46IV6f7syTjaz%2Bg%3D%0A&s=19efefe4accb9ec7e07dc97b45eb0a13bab26b6f3b61483b1cb4776b3efa3e3a _______________________________________________ Freesurfer mailing list [email protected] https://urldefense.proofpoint.com/v1/url?u=https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer&k=yYSsEqip9%2FcIjLHUhVwIqA%3D%3D%0A&r=4ebx%2BU4XzNnu4XA8t53Lt0n%2FTCuxbfN4Z1deUmAFsLg%3D%0A&m=kGMeR2ywj8DAuHR01yI9QTMsjMPS46IV6f7syTjaz%2Bg%3D%0A&s=81b9e1c427d7eb86e493a947c84988d7d2cfd16a9f560b17fef367fab26a81d9 The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at https://urldefense.proofpoint.com/v1/url?u=http://www.partners.org/complianceline&k=yYSsEqip9%2FcIjLHUhVwIqA%3D%3D%0A&r=4ebx%2BU4XzNnu4XA8t53Lt0n%2FTCuxbfN4Z1deUmAFsLg%3D%0A&m=kGMeR2ywj8DAuHR01yI9QTMsjMPS46IV6f7syTjaz%2Bg%3D%0A&s=1b201b4cb8e6fc3350a2fdecbde51e283ca76da2b0c9172e624a2268bfc07b7f . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail. _______________________________________________ Freesurfer mailing list [email protected] https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
