| List of regions which send connections to: TRN |
|
| Hippocampal formation (HPF) |
| Primary motor area (MOp) |
| Secondary motor area (MOs) |
| Primary somatosensory area (SSp) |
| Primary visual area (VISp) |
| Anterior cingulate area (ACA) |
| Anterior cingulate area dorsal part (ACAd) |
| Orbital area (ORB) |
| Prelimbic area (PL) |
| Retrosplenial area (RSP) |
| Cerebellum (CB) |
| Ventral part of the lateral geniculate complex (LGv) |
| Medial preoptic area (MPO) |
| Medial preoptic nucleus (MPN) |
| Anterior pretectal nucleus (APN) |
| Nucleus of the optic tract (NOT) |
| Superior colliculus (SC) |
| Nucleus prepositus (PRP) |
| Nucleus incertus diffuse part (NId) |
| Nucleus incertus compact part (NIc) |
| Superior central nucleus raphe (CS) |
| Tegmental reticular nucleus (TRN) |
