That is the right file to use, and one would expect to see significant results. Are you sure you are using exactly the same model? If you have matlab, I can give you some code to do the analysis using the exact model that mri_glmfit uses.

doug

On 12/9/13 10:43 PM, Sinead Kelly wrote:

Dear Freesurfer users,

I have just ran mri-glmfit on cortical thickness data and corrected for multiple comparisons using Monte Carlo Simulation. I have significant clusters (cwp < .05), however, when I analyse the average thickness measures from the xxx.y.ocn.dat file in SPSS, there are no significant differences between my groups. I'm not sure if I am using the correct approach to extract thickness values for the significant clusters.

Thank you for your help,

Sinead

--

Sinead Kelly

Neuropsychiatric Genetics Group

Trinity Centre

St. James's Hospital

Dublin 8
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