"Dopamine is considered a neurotransmitter that is crucial for our ability to perceive rewards and to be motivated in our behavior."

VOA: special.2009.09.16

The decrease in the amount of dopamine can result in one or more of the general signs of Parkinson's.

VOA: special.2009.02.03

He says they might be trying to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.16

He says they might be attempting to increase their dopamine levels to make up for the deficits in their reward system.

VOA: special.2009.09.29

The decrease in the amount of dopamine can result in one or more general signs of Parkinson's disease.

VOA: special.2009.04.07

Doctor Volkow says the dopamine levels were directly related to the severity of the patient's inattention.

VOA: special.2009.09.16

Doctor Volkow says the dopamine levels were directly linked to the severity of the patient's inattention.

VOA: special.2009.09.29

Researchers studied the pathways on which dopamine travels in fifty-three adults with A.D.H.D.

VOA: special.2009.09.29

The cells slowly lose their ability to produce a chemical called dopamine.

VOA: special.2009.04.07

Researchers compared the pathways that transmit dopamine in fifty-three adults with A.D.H.D.

VOA: special.2009.09.16

"There was a lower concentration of dopamine markers in the brain of individuals with A.D.H.D., specifically in the areas of the brain that are involved with reward and motivation."

VOA: special.2009.09.29

Zyban works by increasing levels of dopamine in the brain.

VOA: special.2010.03.09

could be caused by problems in the flow of dopamine.

VOA: special.2009.09.29

Other drugs used to treat Parkinson's disease act like dopamine.

VOA: special.2009.04.07

Dopamine is a chemical that produces pleasure.

VOA: special.2010.03.09