Technical NoteImplementation of a new parcellation of the orbitofrontal cortex in the automated anatomical labeling atlas

•A new parcellation of the orbitofrontal cortex for the AAL•The AAL is the automated anatomical labeling atlas of Tzourio-Mazoyer et al. (2002).•The new atlas, AAL2, is available as aal2.nii.gz at http://www.gin.cnrs.fr.

An alternative parcellation of the orbitofrontal cortex is described for the automated anatomical labeling atlas of Tzourio-Mazoyer et al. (2002) (Automated anatomical labeling of activations in SPM using a macroscopic anatomical parcellation of the MNI MRI single-subject brain. NeuroImage 15:273-289). The new parcellation of the orbitofrontal cortex follows the description provided by Chiavaras, Petrides, and colleagues (2000, 2001). The new atlas is available as a toolbox for SPM at http://www.gin.cnrs.fr/AAL2.