Nervous System: News and Research on Basal Ganglia

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Cannabis and tobacco use linked to smaller brain volume

Cannabis and tobacco—whether used on their own or together—can affect the brain's structure. A recent study involving systematic review and meta-analysis of more than 103 studies found that both substances are linked to reduced ...

Stress and addiction: New research reveals what connects them

Why do stressful moments so often push people toward habits like drinking? A new study from Texas A&M University offers one of the clearest answers yet, identifying a direct connection inside the brain that links stress to ...

Astrocytes in the amygdala may play a key role in anxiety

In a study published in Neuron, Ciaran Murphy-Royal, researcher at the Center de recherche du Center hospitalier de l'Université de Montréal (CRCHUM), and his team show that astrocyte activity in the brain's fear center, ...

How the brain fine-tunes fear as threats fade

Researchers at Tulane University have identified brain circuits that help determine how fear responses change as perceived threats diminish, offering new insight into how the brain regulates defensive behavior and why those ...

How serotonin can be hijacked in the brain

Scientists have uncovered a powerful strategy that the brain uses to coordinate chemical signaling. In a new study, researchers found that in the striatum, a brain region central to learning and moving, one chemical signaling ...

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