Summary Basal Ganglia in Motor Control

Basal Ganglia in Motor
Control
BASAL GANGLIA CONNECTIONS
information that goes to the basal ganglia comes from the
cerebral cortex. this comes down as the corticostriate tract



the basal ganglia also gets some of its input from the
intralaminar nuclei of the thalamus in the internal y
shaped medulla



Circuit of connections

cortex to basal ganglia to thalamus and back to the
cerebral cortex

helps to program automatic movement sequences



Output from basal ganglia to the reticular formation

this reduces muscle tone

damage produces rigidity of Parkinson's disease. this is
because of lack of dopamine in the nigrostriatal pathway



striatum (neostriatum)

caudate nucleus

putamen



lentiform nucleus

putamen

globus pallidus (paleostriatum/pallidum) - internal and
external segment



Basal Ganglia in Motor Control 1