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Term Definition
Ecstasy(MDMA) A chemically modified amphetamine that has hallucinogenic as well as stimulant properties.

enablingThings that people who are close to addicts do unconsciously that either encourage, or at least do not interfere with, the addict's drug use.

endogenousSomething produced by the brain or body.

endorphinsPeptides with opiate-like effects that are made by neurons and used as neurotransmitters; one of the endogenous opioids that binds to opiate receptors.

enkephalinsPeptides with opiate-like effects that are made by neurons and used as neurotransmitters; one of the endogenous opioids that binds to opiate receptors.

enzymeA large molecule that living organisms use to facilitate the transition from one form of a chemical to another. Enzymes are used to build, modify, or break down different molecules.

EtherAn inhalant. Ether was one of the first anesthetics to be used in surgery, but has been replaced by more effective, safer anesthetics.

euphoriaIntense pleasure. Drug-induced euphoria is a "rush" or pleasurable feeling. It is caused by the release of the neurotransmitter, dopamine, within the brain reward system.

excitatory neurotransmitterA neurotransmitter that acts to elicit an action potential or make it more likely that one will be elicited.

explicit memoryMemories derived from conscious learning, using our senses and attention to store information about what is in the world and where and when events have occurred.

Special Thanks:
Addiction Studies Program - Wake Forest University School of Medicine
False Messengers: How Addictive Drugs Change the Brain by David Friedman, PhD, and Sue Rusche, Harwood Academic Publishers, Amsterdam, The Netherlands, 1999. [www.addictionstudies.org]