Thank you for the hint.<br><br>I followed the advice but got an error message:<br><br>mri_label2vol --annot $SUBJECTS_DIR/$SUBJECT/label/lh.aparc.annot --temp $SUBJECTS_DIR/$SUBJECT/mri/T1.mgz --o $SUBJECTS_DIR/$SUBJECT/label/aseg-in-func.mgh --subject $SUBJECT --hemi lh<br><br>mri_segstats --seg $SUBJECTS_DIR/$SUBJECT/label/aseg-in-func.mgh --ctab $FREESURFER_HOME/tkmeditColorsCMA --nonempty --excludeid 0 --in /home/sandy/data/meg/ptp/sub05/cond8-lh.mgh --frame 205 --sum $SUBJECTS_DIR/$SUBJECT/label/sub05_cond8.aseg-in-func.sum<br><br>Does this look about right? The functional --in volume is a time series with results.<br><br>And then the following ERROR MESSAGE comes up:<br><br>Voxel Volume is 1 mm^3<br>Generating list of segmentation ids<br>Found 165 segmentations<br>Computing statistics for each segmentation<br>&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Left-Cerebral-Exterior&nbsp; 919&nbsp; 919<br>Segmentation fault<br><br>I tried this both on a 32bit and a 64bit
 machine.<br><br>Does anyone have a suggestion what the problem may  be?<br><br>Thanks a lot.<br><br>Sandy<br><br><b><i>Doug Greve &lt;greve@nmr.mgh.harvard.edu&gt;</i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">      <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"><title></title>     <br> You can map the segmentations (aseg or aparc+aseg) to the functional space with mri_label2vol, then run mri_segstats passing it the func space aseg and your input mgh file.<br> <br> doug<br> <br> <br> <a class="moz-txt-link-abbreviated" href="mailto:oxro03@yahoo.com">oxro03@yahoo.com</a> wrote: <blockquote cite="mid723397.42695.qm@web54505.mail.yahoo.com" type="cite">Hi Freesurfers,<br>   <br> I have functional activation files (.mgh) which I can overlay onto a subject's surface. Now I am trying to do a functional ROI analysis based on the annotation files, e.g. to get information about
 the mean activation in a specific area based on FS segmentations. <br>   <br> Does anybody have any suggestion on how to do this in a straightforward manner?<br>   <br> Thanks a lot.<br>   <br> Sandy   <div> </div>   <hr size="1">Any questions? Get answers on any topic at <a href="http://answers.yahoo.com/;_ylc=X3oDMTFvbGNhMGE3BF9TAzM5NjU0NTEwOARfcwMzOTY1NDUxMDMEc2VjA21haWxfdGFnbGluZQRzbGsDbWFpbF90YWcx">Yahoo! Answers</a>. Try it now.   <pre wrap=""><hr size="4" width="90%"> _______________________________________________ Freesurfer mailing list <a class="moz-txt-link-abbreviated" href="mailto:Freesurfer@nmr.mgh.harvard.edu">Freesurfer@nmr.mgh.harvard.edu</a> <a class="moz-txt-link-freetext" href="https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer">https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer</a></pre> </blockquote> <br> <pre class="moz-signature" cols="72">-- <br>Douglas N. Greve, Ph.D.<br>MGH-NMR Center<br><a class="moz-txt-link-abbreviated"
 href="mailto:greve@nmr.mgh.harvard.edu">greve@nmr.mgh.harvard.edu</a> Phone Number: 617-724-2358  Fax: 617-726-7422  In order to help us help you, please follow the steps in: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting  </pre> </blockquote><br><p>&#32;
<hr size=1>Cheap Talk? <a href="http://us.rd.yahoo.com/mail_us/taglines/postman8/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com">Check out</a> Yahoo! Messenger's low PC-to-Phone call rates.