Psychology & Psychiatry

Teens' brains are more sensitive to rewarding feedback from peers

Teenagers are risk-takers—they're more likely than children or adults to experiment with illicit substances, have unprotected sex, and drive recklessly. But research shows that teenagers have the knowledge and ability to ...

Parkinson's & Movement disorders

Parkinson's treatment can trigger creativity

Parkinson's experts across the world have been reporting a remarkable phenomenon—many patients treated with drugs to increase the activity of dopamine in the brain as a therapy for motor symptoms such as tremors and muscle ...

Addiction

Internet addiction—Causes at the molecular level

Everybody is talking about Internet addiction. Medically, this phenomenon has not yet been as clearly described as nicotine or alcohol dependency. But a study conducted by researchers from the University of Bonn and the Central ...

Addiction

Potential new drug for alcohol dependence

(Medical Xpress) -- Research from Karolinska Institutet has identified a monoamine stabiliser as a potential new drug for the treatment of alcohol dependence. Tested on rats, whose reward system is gradually blunted by long-term ...

Neuroscience

Brain circuitry is different for women with anorexia and obesity

Why does one person become anorexic and another obese? A study recently published by a University of Colorado School of Medicine researcher shows that reward circuits in the brain are sensitized in anorexic women and desensitized ...

Psychology & Psychiatry

Low dopamine levels during withdrawal promote relapse to smoking

Mark Twain said, "Giving up smoking is the easiest thing in the world. I know because I've done it thousands of times." Many smokers would agree that it's difficult to stay away from cigarettes. A new study in Biological ...

Neuroscience

Faulty signaling in brain increases craving for sugar and drugs

When glutamate and dopamine do not collaborate as they should in the brain's signal system, the kick that alcohol, sugar, or other drugs induce increases. This is shown in a new Swedish-Canadian study on mice being published ...

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