Figure 4: Triangulated 3D surface reconstruction of H.M.’s spared left hippocampus.

The orange bounding box delimits the dimensions of the structure; different segments indicate different measurements; a: anterior-to-posterior extent in the coronal plane, b (dotted): major diagonal axis, c: anatomical length. The compass cube (A: anterior, L: lateral, S: superior) also functions as scale bar: 5 mm. The insert at the bottom right shows a similarly constructed model from the brain of a neurologically normal subject (78-year-old female donor; volume of the right hippocampus=3.04 mm3; total brain weight 1,278). Ce, cerebellum; FuGR, fusiform gyrus of right hemisphere; IT, inferior temporal gyrus; SN, substantia nigra; Amg, amygdala.