Christine,

This would do it:

mri_segstats --annot fsaverage lh aparc --i sig.mgh --sum out.txt

where this will find the means for the 'aparc' ROI's, for the input file sig.mgh (assuming it was produced by some group analysis, like mri_glmfit or qdec), and produces output text file out.txt.

Nick

On Wed, 2009-01-28 at 17:29 +0000, Christine Ecker wrote:

Hi,

Just wondering whether it is possible to extract values from an overlay created on fsaverage for aparc parcellated regions e.g. the mean of a statistical test parameter for specific aparc ROIs?

I know it is possible to extract values for individual subjects on the basis of fsaverage ROIs, but all I would need is the mean for individual ROIs on fsaverage.

Thanks for your help!

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Dr. Christine Ecker Section of Brain Maturation (PO50) Department of Psychological Medicine De Crespigny Park, Denmark Hill London SE5 8AF

Phone: 0207 848 0947 Email: c.ecker@iop.kcl.ac.uk

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