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. Author manuscript; available in PMC: 2013 May 29.
Published in final edited form as: Neurobiol Aging. 2007 Sep 11;30(3):420–431. doi: 10.1016/j.neurobiolaging.2007.07.023

Figure 2.

Figure 2

Step-by-step illustration of manual cortical surface-volume tracing protocol. Points, shown in blue, selected on the volume (left), were matched to points along the surface (right), shown in white. These points were used to delineate the borders of each region. (B, G) The rostral border of the ERC/PRC was traced first. (C, H) Tracing continues caudally, with the dorsomedial and ventrolateral borders of ERC/PRC delineated. To increase reliability, the paths are only drawn to the midpoint. (D, I) ERC/PRC borders are fully traced. (E, J) Tracing of the PPHC borders extends from the ERC/PRC dorsomedial and ventrolateral borders.