Huberman Lab Essentials: Compulsive Behaviors & Deep Brain Stimulation | Dr. Casey Halpern
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May 7, 2026 
Casey Halpern, a Penn neurosurgeon and brain stimulation researcher, explores deep brain stimulation, focused ultrasound, and other tools for compulsive behaviors. He digs into OCD, binge eating, cravings, impulsivity, and the brain circuits behind them. The conversation also looks at noninvasive stimulation and AI models that may predict harmful urges.
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How Tremor Surgery Exposed Emotion Circuits
- Casey Halpern says deep brain stimulation often reveals the brain's motor and emotional circuits at once, not just the intended target.
- While treating tremor, patients can briefly laugh, panic, or even report gambling and mood improvements.
When Helpful Obsession Becomes OCD
- Halpern frames OCD as a spectrum where useful obsessiveness becomes disorder once it turns uncontrollable and disabling.
- First-line SSRIs, tricyclics, and exposure response prevention help many, yet about 30% still suffer and surgery yields only about 50% responders.
The Shared Brain Circuit Behind Risky Urges
- Halpern ties OCD, addiction, and binge eating to a shared circuit for pursuing urges despite risk, centered on cortex projections into the ventral striatum and nucleus accumbens.
- He compares checking locks until 3 a.m., washing for hours, drug seeking, and bingeing as versions of the same gating failure.