subthalamus /-thal″əməs/ [L, sub + Gk, thalamos, chamber] , a part of the diencephalon that serves as a correlation center for optic and vestibular impulses relayed to the globus pallidus. It is a transition zone between the thalamus and the tegmentum mesencephali. Compare epithalamus, hypothalamus, metathalamus, thalamus. −subthalamic, adj.
