Pial surface extraction error This topic has 2 replies, 1 voice, and was last updated 7 years, 11 months ago by mike214. Viewing 1 reply thread Author Posts November 28, 2017 at 12:24 am #966 mike214Participant sry for insisting in this case. The “error” already happens at the cerebrum labeling step. Does someone have an idea ? thank you for your help! michael November 28, 2017 at 12:40 am #967 mike214Participant PS: setting cost function to “least squares” or “standard deviation” does not solve the problem. With standard deviation it looks bit better, but still some remaining brain tissue (frontal cortex) outside of the mask…. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In