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Dopamine recruits a helper to track drug rewards.
Ah, dopamine... of normal rewards to govern behavior.” In an impaired reward system, “natural” rewards don’t alter dopamine...
The Molecules of Reward
Serotonin and dopamine are part of a group of compounds called... that are potentially rewarding. Even in the absence of any possibility of reward--on a desert island, in a rehab clinic--dopamine... 
of reward pathways (including the dopamine system) in the brain
Many of us have had the experience.... These feelings originate from the dopamine reward system – dopamine is a neurochemical that regulates motivation... 
have shown that the dopamine reward pathway is also extremely active when people are forced to eat something disgusting, or...
In attempting to explain attention and ADHD, Jonah Lehrer explains dopamine's salience function...
in the form of sugar depends upon sugar's drug-like effect on the dopamine-rich reward center known...-cal sweeteners did not result in a similar dopamine boost along the reward pathways of the brain.
The brain... 
For most ADD’ers, the lack of dopamine the brain produces is a challenge. I’ve posted about this many times. Dopamine is at the core of our sexual drives and survival needs, and it motivates...
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Dopamine is known to have a "reward" function in the brain
Experiments show that altering levels...
BBC News
Dopamine, a chemical with a key role in setting people...
is that fibromyalgia patients produce less dopamine in the areas of the brain that process pain.
Dopamine... and cognition, voluntary movement, motivation and reward, sleep, mood, attention, and learning.
The study...
Overeating, drug abuse, and the D2 receptor.
A genetic variation in the dopamine D2 receptor... University and the University of Texas have used brain scans to show that a dopamine-rich structure called... 
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