The subthalamus

  • The subthalamus is bounded above by thalmus, medially by hypothalamus, and laterally by the internal capsule.
  • Its main nuclear group is the subthalamic nucleus
  • Rostral and dorsal to the subthalamic nucleus is the zona incerta (Fig )
  • Its main concern is somatic control of some somatic motor function
  • Fiber systems pass though this area
  • Main concern: somatic motor function.