• Clusters of nerve cells deep in the brain that play an important role in movement.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• Clusters of neurons comprising the globus pallidus, putamen, caudate, nucleus accumbens, substantia nigra and subthalamic nucleus. They are involved with high level aspects of inhibitory motor activity in coordination with the excitation commands issued from the cerebellum.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• Large subcortical nuclear masses derived from the telencephalon and located in the basal regions of the cerebral hemispheres.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Subcortical masses of gray matter of the cerebrum, namely, the caudate nucleus, putamen, globus pallidus, amygdala, and clastrum; involved in initiating and directing voluntary movements.
  CRISP Thesaurus
  National Institutes of Health, 2006
• Basal ganglia, group of nuclei (clusters of neurons) in the brain that are located deep beneath the cerebral cortex (the highly convoluted outer layer of the brain). The basal ganglia specialize in processing information on movement and in fine-tuning the activity of brain circuits that determine...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020