What is .STATS file extension?
Data file generated by FreeSurfer, a program used for generating brain images from MRI data; contains output data such as subcortical segmentation data (i.e., aseg.stats), cortical parcellation data (i.e., aparc.stats), and other information that can be used for generating an output image.
STATS files are saved in a plain text format, but you should refer to the FreeSurfer documentation to understand the particular format of the file.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.