Figure 1.

Coronal T1-weighted MR images acquired before surgery, Fluid Attenuated Inversion Recovery (FLAIR) MR images collected approximately 1 week after surgery, and estimated lesion extent in gray (left to right columns, respectively) showing the anterior, middle, and posterior hippocampal formation (top to bottom rows, respectively) for a representative case with a neurotoxic hippocampal formation lesion (H-ibo-5). The ideal extent of the lesion is drawn in black on the presurgical T1-weighted images and then transferred onto the postsurgical FLAIR images for reference. The numerals to the left of each row indicate the distance in millimeters from the interaural plane. amt anterior middle temporal sulcus; ERh = entorhinal cortex; ot = occipitotemporal sulcus; PRh = perirhinal cortex; pmt = posterior middle temporal sulcus; rs = rhinal sulcus; sts = superior temporal sulcus; TE, TEO, TF, TFO and TH = cytoarchitectonic fields described by von Bonin and Bailey (1947). Reprinted with permission of the American Psychological Association.