subthalamic nucleus n.
A circumscript nucleus that is located in the ventral part of the subthalamus, receives a massive projection from the lateral segment of the globus pallidus, and projects to both pallidal segments and to the mesencephalic tegmentum.
subthalamus sub·thal·a·mus (sŭb-thāl’ə-məs) n. The part of the diencephalon that is wedged ventrally between the thalamus on the dorsal side and the cerebral peduncle, is lateral to the dorsal half of the hypothalamus, and is caudally continuous with the mesencephalic tegmentum. sub’tha·lam’ic (-thə-lām’ĭk) adj.
noun 1. a subject of discourse, discussion, meditation, or composition; topic: The need for world peace was the theme of the meeting. 2. a unifying or dominant idea, motif, etc., as in a work of art. 3. a short, informal essay, especially a school composition. 4. Music. a principal melodic subject in a musical composition. […]
[suhb-ther-uh-pyoo-tik] /ˌsʌb θɛr əˈpyu tɪk/ adjective 1. indicating a dosage, as of a drug or vitamin, less than the amount required for a therapeutic effect.
[suhb-thresh-ohld, -thresh-hohld] /sʌbˈθrɛʃ oʊld, -ˈθrɛʃ hoʊld/ adjective, Psychology, Physiology. 1. (of a stimulus) too weak to produce a response.