You can do a cluster-based correction for multiple comparisons to compute the p-value of the cluster. Is that what you mean?

doug

On Thu, 20 May 2010, Rajagopalan, Venkateswaran wrote:

Thanks Doug, but for instance in my result the inferiorparietal region is significantly different in some areas but not in the entire region, so in this case it will difficult because i have to move the cursor to regions where it is significant and other vertex where it is not significant this means that i will have two or more coordinates to report a single region, i am wondering is there a way to identify in this map which cluster is significant and report its center coordinate.

Thanks in advance

venkat

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From: Douglas N Greve [mailto:greve@nmr.mgh.harvard.edu] Sent: Thu 5/20/2010 1:33 PM To: Rajagopalan, Venkateswaran Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Reporting coordinates from Group analysis

If you click on a point, it should tell you in the control window what the talairach coordinates are

doug

Rajagopalan, Venkateswaran wrote:

...

Dear All,

I checked the archives but couldn't get a complete answer. I performed group analysis of cortical thickness using mri_glmfit. I am wondering how to report the coordinates of regions where cortical thickness is significantly different, i used FDR for multiple comparisons in tksurfer. So how to get these coordinates after FDR where is this file stored.

Thanks

venkat

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