The subcutaneous region (lat. regio subthalamica) is a part of the diencephalon located under the visual thalamus.
The subtubercular region includes several important nuclei:
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Subthalamic nucleus - participates in the regulation of motor activity.
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Substantia nigra - contains dopaminergic neurons involved in the regulation of movements.
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The red nucleus is a relay center for motor signals from the cerebellum to the cerebral cortex.
The subcutaneous region plays a key role in controlling voluntary movements and maintaining muscle tone. Lesions in this area can cause various movement disorders, such as Parkinson's disease.