The<unk>  is part of the ventral thalamus that forms a capsule around the thalamus laterally. However, recent evidence from mice and fish question this statement and define it as a dorsal<unk>  structure. It is separated from the thalamus by the external medullary lamina. Reticular cells are GABAergic, and have discoid dendritic arbors in the plane of the nucleus.<unk>  is variously abbreviated<unk> ,<unk> N,<unk> , and<unk> .
Thalamic reticular nucleus
Gigantocellular reticular nucleus
Paramedian reticular nucleus
Medial pulvinar nucleus
Caudal pontine reticular nucleus
Arcuate nucleus 
Reticulotegmental nucleus
Periventricular nucleus