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dopamine |
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dopamine (dōp`əmēn), one of the intermediate substances in the biosynthesis of epinephrine epinephrine (ĕp'ənĕf`rīn), hormone important to the body's metabolism, also known as adrenaline. ..... Click the link for more information. and norepinephrine. See catecholamine catecholamine (kăt'əkôl`əmēn) ..... Click the link for more information. . dopamineOne of the catecholamines, widely distributed in the central nervous system. Through a series of enzymatic reactions (see enzyme) it is formed from levodopa and converted to norepinephrine and then epinephrine. It is a central nervous system neurotransmitter essential to control of motion; it also acts as a hormone. Degeneration of certain dopamine-producing brain cells results in parkinsonism. |
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| DOPAMINE HIGHS Installing microelectrodesjust outside neurons can illuminate the ways in which specific signal molecules influence behavior. Discuss with students what they know about the brain chemical dopamine: it is a neurotransmitter that causes feelings of pleasure when it binds with dopamine receptors in the brain. That's when they first zeroed in on how a neurotransmitter, or chemical messenger, called dopamine relates to body motion--and subsequently, to PD (see Nuts & Bolts, p. |
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dopamine
