Hi pfannmoe

what version are you using? Could you download dev and try it out and see if it fixes your problem? I suspect it does

cheers Bruce On Fri, 6 May 2016, pfannmoelj@uni-greifswald.de wrote:

Dear Experts,

in most of my subjects the cortical parcellation with the Desikan-Killiany atlas is all fine. I am especially interested in the postcentral gyrus. In several of my participants there is a typical problem with the automatic parcellation in this region. About half the postcentral gyrus is parcellated correctly (the lower half), but the upper half is shifted to a posterior part of the brain and the upper half of the postcentral gyrus is parcellated as the precentral gyrus.

Attached you find a typical example, one hemisphere is parcellated correctly (left_hemisphere.jpg), the other one shows the problem (right_hemisphere.jpg). The postcentral gyrus is shown in red and the precentral gyrus in blue. The only difference that I can spot is in the anatomy of the superiorparietal and supramarginal regions. These regions are disconnected in the left hemisphere, but have a gyrus which connects them in the right hemisphere. May that cause the difference in the parcellations?

Yours pfannmoe