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ScienceDaily: Dopamine-related Drugs Affect Reward-seeking Behavior

ScienceDaily: Dopamine-related Drugs Affect Reward-seeking Behavior:

"'The results show dopamine drives us to get what we want, but not avoid what we fear,' said study author Mathias Pessiglione, PhD, who now works at the Salpetriere Hospital in Paris, France.

The findings may provide a better understanding of the side effects of dopamine-related drugs and the disorders they are used to treat, such as Parkinson's disease and schizophrenia. 'This study may explain why dopamine depletion leads to the lack of motivation often described in people with Parkinson's disease,' said Pessiglione, 'and how dopamine replacement therapy can cause compulsive behaviors, such as overeating and gambling addictions, in the same people.'"
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