Neurotransmitters are a substance found on the end of a nerve that communicates with another nerve, thus transmitting a message or an impulse. Psychoactive drugs affect neurotransmitters by interrupting how the neurotransmitter affects the cell by either blocking or over producing an impulse. For example, the neurotransmitter, GABA, reduces anxiety. When a person drinks any alcohol, it binds with GABA and increases any affects, which makes the person feel more inhibited (Ciccarelli and White, 2009).
Ciccarelli, Saundra K., and J. Noland White. Psychology, Books a la Carte Plus MyPsychLab (2nd Edition). 2 ed. Alexandria, VA: Prentice Hall, 2008.
Source: Wiki Answers
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