Brain Chemistry - Research Article from Drugs, Alcohol, and Tobacco

This encyclopedia article consists of approximately 8 pages of information about Brain Chemistry.
This section contains 2,180 words
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Chemistry Carries the Message

Each neuron, when activated, will release molecules from the business end of its output fiber, the axon, to continue a message. The molecules must cross the microscopic gap that separates the end of the axon from the next nerve cell, a space called the synapse.

Many of the molecules that are released in synapses, the so-called neurotransmitters, have already been studied in detail. While more than 20 different molecules are known to serve as neurotransmitters, scientists believe that even more await discovery. Still, it is a single molecule, dopamine, that has been identified as the neurotransmitter responsible for addictive behavior.

When the nerve ending of one neuron meets the end of another neuron, the junction is called a synapse. Special chemicals, called neurotransmitters, are released, which meet and activate receptors. When the nerve ending of one neuron meets the end of another neuron, the junction is called a synapse. Special chemicals, called neurotransmitters, are released, which meet and activate receptors.

Dopamine. Neuroscientists have found that dopamine plays a key role in registering pleasure (allowing the...

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This section contains 2,180 words
(approx. 8 pages at 300 words per page)
Buy the Brain Chemistry Encyclopedia Article
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Drugs, Alcohol, and Tobacco
Brain Chemistry from Drugs, Alcohol, and Tobacco. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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