Figure 3.

Coronal T1-weighted MR images acquired before surgery, T1-weighted MR images collected after surgery, and estimated lesion extent in gray (left to right columns, respectively) showing the anterior, middle, and posterior orbital frontal cortex (top to bottom rows, respectively) for a representative case with an aspiration orbital frontal cortex lesion (O-asp-1). The ideal extent of the lesion is drawn in black on the presurgical T1-weighted images and arrows in the middle column denote the medial and lateral extent of the lesion in each hemisphere. 10, 11, 12, 13, 14, and 46 = cytoarchitectonic fields of the frontal lobe as described by Carmichael and Price (1994); Ia = agranular insular area; mos = medial orbital sulcus; los = lateral orbital sulcus; PrCO = precentral opercular cortex. Reprinted with permission of the American Psychological Association.