[Freesurfer] X Coordinates signs switched after Qdec

Dear Freesurfer users,

We have made an analysis of 2 groups (i.e. patients, healthy subjects) in order to see the cortical thickness differencies. We have introduced these groups into Qdec. The results showed p-values on a scale from -5 to +5 and the X coordinates of the right hemisphere were negative. Two questions: - are the p-values actually t-values ? - normally the X coordinates of the right hemisphere should be positive. Any ideas why they are negative ?

Thank's a lot for any help.

Best regards, Dr. Alexandru Hanganu ___________________________________

Department of Neurology, Schleswig-Holstein University Hospital, Kiel Campus Arnold-Heller-Str. 3, building no. 41 D-24105 Kiel, Germany.