| List of regions which send connections to: PPN |
|
| Piriform area polymorph layer (PIR3) |
| Infralimbic area (ILA) |
| Prelimbic area (PL) |
| Endopiriform nucleus dorsal part (EPd) |
| Caudoputamen (CP) |
| Fundus of the striatum (FS) |
| Bed nuclei of the stria terminalis (BST) |
| Bed nuclei of the stria terminalis rhomboid nucleus (BSTrh) |
| Bed nuclei of the stria terminalis anterior division dorsomedial nucleus (BSTdm) |
| Bed nuclei of the stria terminalis anterior division ventral nucleus (BSTv) |
| Bed nuclei of the stria terminalis anterior division magnocellular nucleus (BSTmg) |
| Magnocellular preoptic nucleus (MA) |
| Substantia innominata (SI) |
| Globus pallidus lateral segment (GPl) |
| Posterior complex of the thalamus (PO) |
| Zona incerta (ZI) |
| Ventral part of the lateral geniculate complex (LGv) |
| Reticular nucleus of the thalamus (RT) |
| Lateral hypothalamic area (LHA) |
| Lateral preoptic area (LPO) |
| Retrochiasmatic area (RCH) |
| Anterior hypothalamic nucleus (AHN) |
| Medial preoptic area (MPO) |
| Anteroventral preoptic nucleus (AVP) |
| Medial preoptic nucleus (MPN) |
| Medial preoptic nucleus central part (MPNc) |
| Medial preoptic nucleus medial part (MPNm) |
| Medial preoptic nucleus lateral part (MPNl) |
| Paraventricular nucleus of the hypothalamus, parvicellular division, anterior parvicellular part (PVHap) |
| Paraventricular nucleus of the hypothalamus, descending division, lateral parvicellular part (PVHlp) |
| Paraventricular nucleus of the hypothalamus, descending division, medial parvicellular part, ventral zone (PVHmpv) |
| Median preoptic nucleus (MEPO) |
| Anterior pretectal nucleus (APN) |
| Superior colliculus (SC) |
| Pontine reticular nucleus caudal part (PRNc) |
| Periaqueductal gray (PAG) |
| Precommissural nucleus (PRC) |
| Substantia nigra (SN) |
| Substantia nigra reticular part (SNr) |
| Substantia nigra compact part (SNc) |
