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NIDA Notes Articles: Brain

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Adolescent Marijuana Use Is Linked to Altered Neural Circuitry and Mood Symptoms

August 2018
Some teens' marijuana use has been linked to disrupted communication between two key regions in the brain’s reward circuitry at age 20. Disrupted communication between the regions was associated with poorer psychosocial functioning at age 22. En Español

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A Family-Oriented Intervention May Reduce the Effects of Poverty on Brain Development

January 2018
The parenting-focused Strong African American Families program can ameliorate poverty’s negative effects on limbic brain development.  

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Deep Brain Stimulation Attenuates Rats’ Responses to Heroin

October 2017
High-frequency electrical stimulation of neurons deep in the brain can reduce rats’ relapse-like behavior and motivation to take heroin. The finding strengthens hope that deep brain stimulation might offer a new treatment alternative for opioid addiction, particularly for patients who have not benefited from other treatments.

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Narrative of Discovery: Can Magnets Treat Cocaine Addiction?

September 2015
Two researchers share their reasons for researching transcranial magnetic stimulation (TMS) for treating cocaine addiction, and describe challenges to moving forward this potentially promising therapy.

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Why Take a Drug That No Longer Gives Pleasure?

September 2015
In mice, a cocaine-induced imbalance in the activity of two key populations of neurons in the reward system persists for a longer period after repeated exposure to the drug. For long-term users, this change could both weaken the cocaine “high” and strengthen the compulsion to seek the drug.

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THC Hampers Spatial Memory Development in Young Monkeys

September 2015
Adolescent monkeys that were exposed to THC fell progressively further behind THC-free monkeys in their ability to recall the location of an object after a brief delay.

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