What brain structure has been found to be involved in the development of OCD and OCD-related disorders?

Question

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Studies have shown that the basal ganglia, a region located deep within the brain, is involved in the development of OCD and OCD-related disorders. The basal ganglia is responsible for regulating movement, but it also plays a role in decision-making, habit formation, and reward processing. Dysfunction in this region can result in the repetitive behaviors and intrusive thoughts characteristic of OCD.

What Brain Structure Has Been Found to Be Involved in the Development