Fig. 2.

Illustration of idealized boundaries manually drawn on Mai atlas figures (Mai et al., 1997), from most rostral (1) to most caudal (9). Medial boundaries are in blue; dorsal and dorsolateral boundaries are in red; ventral and ventro-lateral boundaries are in yellow. Red arrows are shown to indicate direction of dorsal boundary toward anterior commissure; arrows are not part of the tracing protocol. See Box 1 for abbreviations. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

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