The dorsolateral division of the lateral nucleus projected lightly to layer Ib and to layers II and III of the medial portion of the posterior piriform cortex (Table 1).

Collator note: weak-moderate labeling of the medial PIR, layer III, and some in II. See Fig. 4B, Swanson Atlas Level 24

Collator note: very strong labeling of the NLOT. See Fig. 4B, Swanson Atlas Level 24.

Collator note: weak-moderate labeling in the rostral PIR, layer I. See Fig. 4C, Swanson Atlas Level 10, (+2.20 mm from bregma).

The magnocellular division of the accessory basal nucleus provided light-to-moderate projections to the anterior (medially and laterally) and posterior (medially) piriform cortex (Table 1, Fig. 4C,D). Most of the labeled terminals innervated layers Ib and III. Collator note: Swanson Atlas Levels 27-28, -2.30 mm from bregma.

Collator note: PAA sends weak connections to the caudal PIR. See Table 2, page 422.

Collator note: no connection from PAA to the rostral PIR. See Table 2, page 422.

Collator note: no connection from PA to the rostral PIR. See Table 2, page 422.

Collator note: fibers of passage from PA to the caudal PIR. See Table 2, page 422.

Collator note: moderate terminal field in the caudal PIR. Layers III and Ib are mostly labeled. See Fig. 5A, Swanson Atlas Levels 31-32 (-3.80 mm from bregma).

Collator note: no connections from the central nuclei to PIR.

Collator note: no connections from the central nuclei to PIR.

Collator note: no connections from the central nuclei to PIR.

The projection was moderate in density and terminated in the medial portion of the posterior piriform cortex (Fig. 4A). Although most of the labeled terminals were located in layer III, there was also a light projection to layer Ib (Fig. 4A). Collator note: -1.4 mm from bregma, Swanson Atlas Level 24.