T H E    H U M A N    B R A I N	The human brain Neurons Neurotransmission Dopamine Other neurotransmitters Drug interference Contents Understanding Addiction, beginning
Your brain includes billions of neurons which are specialised cells, allowing your brain to learn, reason, and remember. Through the activity of neurons, the body responds and adjusts to changes in the environment. Every time you feel something - including the effects of a drug - millions of neurons are "firing" messages to and from one another. These messages consist of chemical and electrical impulses. For more information on the anatomy of the brain, visit the Digital Anatomist Program of the Universoty of Washington.

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