The<unk> , or lenticular nucleus, comprises the putamen and the globus pallidus within the basal ganglia. With the caudate nucleus, it forms the dorsal striatum. It is a large, lens-shaped mass of gray matter just lateral to the internal capsule. Increased volume of the<unk>  nuclei has been observed in obsessive–compulsive disorder, with decreased volume conversely observed in other anxiety disorders.
Lentiform nucleus
Globose nucleus
Reticulotegmental nucleus
Habenular nuclei
Arcuate nucleus 
Periventricular nucleus
Sublingual nucleus
Fusiform body area