Psychology & Psychiatry

Formation of habitual use drives cannabis addiction

A shift from brain systems controlling reward-driven use to habit-driven use differentiates heavy cannabis users who are addicted to the drug from users who aren't, according to a study in Biological Psychiatry: Cognitive ...

Psychology & Psychiatry

Ability to control stress reduces negative impacts

In individuals, stress exposure in adolescence increases vulnerability and risk of developing psychopathologies in adulthood, such as drug addiction, mood, anxiety, addiction to gambling, attention deficit hyperactivity disorder, ...

Neuroscience

Nicotine alters neurotransmission in habit-forming brain region

A study of rat brain slices published in JNeurosci demonstrates how nicotine interacts with cells that regulate the output of a brain region involved in habit formation. The research could inform efforts to help people quit ...

Neuroscience

Realistic rodent model of drug addiction

Drug addiction may not require a habitual relationship with a substance, suggests findings from a new model of cocaine administration in rats that better captures the human experience of obtaining and using drugs. The research, ...

Neuroscience

Team deciphers sugar's siren song

Sugar's sweetness and calorie content combine to give it lethal power to destroy diets, many scientists have assumed. However, new study by Yale University researchers says the brain responds to taste and calorie counts in ...