Hi all,
I have a question about performing a cluster correction. I have gone through the Group Analysis tutorial on the FsTutorial website, but it walks through the process of doing a glm analysis to compare different conditions of data. I have a mask file (.mgh) that contains activation levels below a certain significance threshold, and I want to use freesurfer to find the true clusters in the data, find the center of each cluster (either the talairach coorindate or something to help localize where the cluster is centered), then create an ROI of a predetermined size and/or shape to the coordinates/areas discovered from the the cluster correction analysis. So, essentially, I want to take an overlay file of significance regions, and extract out the true clusters and define ROIs at the epicenter of these true clusters. How would I best go about doing this? I have seen the examples of cluster correction using mri_glmfit-sim, but I don't want to do a glm analysis. Is there a stand-alone cluster correction analysis program in freesurfer?
Thanks, Brandon --------------------------------------------------------------------- Brandon Pye Post-Baccalaureate IRTA Laboratory of Brain and Cognition, NIMH/NIH/DHHS Building 10, Room 4C214 10 Center Dr MSC 1366 Bethesda, MD 20892 Phone: (301) 402-3893 Fax: (301) 402-0921 brandon.pye@nih.gov