Essay 5 - 1Cocain blocks the brain's reabsorption of the neurotransmitters dopamine and norepinephrine Levels of these substances then rise

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1Cocain blocks the brain's reabsorption of the neurotransmitters dopamine and norepinephrine. Levels of these substances then rise, resulting in overstimulation of certain brain circuits and brief euphoric high. After the drug wears off, a depletion of dopamine may cause the user to crash, and become sleepy and depressed. A tolerance to the high of Cocaine may develop; many addicts say that they seek but fail to achieve as much pleasure as they did from their first exposure. Some users of Cocaine will increase their doses to intensify and prolong the euphoric effects. While tolerance to the high can occur, users can also become more sensitive to cocaine's anesthetic and convulsant effects without increasing the dose taken. This increased sensitivity may explain some deaths occurring after apparently low doses of cocaine. Some of the common effects of cocaine are euphoria, excitation, feelings of energy, and suppressed appetite. Some
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This note was uploaded on 02/15/2012 for the course PSY 1012 taught by Professor Rogers during the Spring '10 term at Daytona State College.

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