The basal ganglia (or basal nuclei) are a group of nuclei of varied origin in the brains of vertebrates that act as a cohesive functional unit. They are situated at the base of the forebrain and are strongly connected with the cerebral cortex, thalamus, and other brain areas.

The functional anatomy of basal ganglia disorders.
The basal ganglia: focused selection and inhibition of competing motor programs.
Primate models of movement disorders of basal ganglia origin.
Speculations on the functional anatomy of basal ganglia disorders.
Basal ganglia and limbic system pathology in schizophrenia. A morphometric study of brain volume and shrinkage
Functional anatomy of the basal ganglia. I. The cortico-basal ganglia-thalamo-cortical loop
Functional architecture of basal ganglia circuits: neural substrates of parallel processing.
Chapter 6 Basal ganglia-thalamocortical circuits: Parallel substrates for motor, oculomotor, “prefrontal” and “l(fā)imbic” functions
Functional anatomy of the basal ganglia. II. The place of subthalamic nucleus and external pallidium in basal ganglia circuitry
Parallel organization of functionally segregated circuits linking basal ganglia and cortex