Hemiballismus | Pathogenesis, Signs/Symptoms, and Detailed Mechanism

The video tutorial explains hemiballismus, a hyperkinetic movement disorder caused by damage to the subthalamic nucleus. It contrasts hemiballismus with Huntington's disease, highlighting differences in causes and symptoms. The tutorial also covers the direct and indirect pathways of the basal nuclei, explaining how they regulate movement. Damage to the subthalamic nucleus disrupts the indirect pathway, leading to involuntary movements characteristic of hemiballismus.

What are the characteristics of the movements seen in hemiballismus?

Explain the direct and indirect pathways of the basal nuclei.

How does damage to the subthalamic nucleus affect movement?