External Email - Use Caution Hi again!
On second thought, we are wondering if this averaged .label file was already blurred during the mris_spherical_average command. If this is the case, do you know what smoothing has been done and by how much? We are interested in seeing the probability of each vertex after the average of the labels. Thank you as always for all of your help!! Best, Kristi From: Kristi Drudik Sent: May 19, 2021 6:42 PM To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> Subject: blurring average label files Hello Freesurfer group, I am using the command 'mris_spherical_average' to map and average a series of label files onto fsaverage (I have created the label files manually by drawing directly on subject surfaces in FreeView). This has allowed me to create a surface probability map, where each vertex on the FreeSurfer fsaverage surface is represented from 0% to 100% as belonging to my sulcus of interest (see screenshot '.label'). I would like to blur the data and load this blurred average as an overlay onto the fsaverage pial. However, when I run 'mri_label2vol' followed by 'mris_fwhm', I lose the probability map and the average label is turned into one large label (see screenshot 'overlay', where most of the map has 99% overlap). Would there be a way to blur this averaged label (obtained from mris_spherical_average) with a similar command to 'mris_fwhm' but for label files? Let me know if you have any questions regarding the procedure. Very much looking forward to your response and thank you for all your time! Best, Kristi Kristi Drudik Montreal Neurological Institute McGill University Montreal, Canada
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