From this terminal field a group of PHAL-labeled fibers extends medially through the lateral parvicellular part of the PVH, which also contains dense terminal boutons, to contribute inputs to all of the more medial parts of the nucleus, but especially the dorsal medial parvicellular and periventricular parts at atlas (Swanson, 1999) levels 26 and 27 (Figs. 3D, 6M,N, 8G,H). ...the PHAL-labeled axons display numerous branches and terminal boutons more caudally in the dorsal medial parvicellular part and adjacent regions of the periventricular part (Figs. 3D9, 6M,N, 8F9,G9). The lateral parvicellular part also contains a dense terminal field (Figs. 3D, 6N, 8F9), whereas the dorsal parvicellular and ventral medial parvicellular parts contain only a small number of PHAL-labeled terminal boutons (Figs. 6M, 8E,F). Collator note: Atlas level 27, Swanson 1998. Fibers of passage are present abundantly. Figure 6N from paper.

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