Re: [Freesurfer] Command failed in QDEC

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Hi Doug,

Thanks for getting back to me! I’ll have a go at the command-line stream and see if that makes a difference.

Many thanks! James

James Karantonis PhD Candidate | Magnetoencephalography Technician

[signature_795106073] Centre for Mental Health | Faculty of Health and Design Swinburne University of Technology 400 Burwood Road, Hawthorn 3122

[signature_692396993] Melbourne Neuropsychiatry Centre | Department of Psychiatry | FMDHS The University of Melbourne & Melbourne Health Level 3, Alan Gilbert Building, 161 Barry St. Carlton, VIC, 3053

From: freesurfer-bounces@nmr.mgh.harvard.edu on behalf of "Greve, Douglas N.,Ph.D." DGREVE@mgh.harvard.edu Reply-To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Date: Wednesday, 11 September 2019 at 1:20 am To: "freesurfer@nmr.mgh.harvard.edu" freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Command failed in QDEC

It might be that the design matrix is ill-conditioned. Did it print anything to the terminal? Also, we are not really supporting qdec anymore, so you can try using the command-line stream (ie, mris_preproc, mri_surf2surf, mri_glmfit, mri_glmfit-sim)

On 9/10/19 2:36 AM, James Karantonis wrote:

    External Email - Use Caution

Hi there,

In QDEC, I have successfully imported my data tables, generated stats, and when I go to analyse, I get the following error: “Error in Analyze: command failed mri_glmfit –y…”. It seems this error only occurs when I use the two variables of age and ICV. Whenever I remove one of those variables, or add any additional variables, it appears to work. Specifically, this is for two comparisons, between bipolar patients and healthy controls, bipolar and schizophrenia patients, but it works for schizophrenia and healthy control comparisons. I’m working on an iMac running High Sierra and Freesurfer v.6.

Any information on how to resolve this error would be greatly appreciated! I’ve attached a screenshot for reference.

Kind regards,

James

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