Scientists identify the protein DeltaFosB as the "master switch" that rewires the brain's memory and reward circuits, driving chronic cocaine addiction and relapse.
Cocaine addiction isn’t simply a failure of willpower — it’s the result of lasting biological changes in the brain.
This schematic depicts the delay-discounting task used to measure impulsivity level. Rats chose either a small reward delivered with no delay or a large reward available with a delay of up to 60 ...
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