Consciousness PP - Drugs: Self-I nduced Variations in...

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Variations in Consciousness
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Drugs: Self-I nduced Variations in Consciousness What is a psychoactive drug? – a chemical substance that modifies mental, emotional, or behavioral functioning Used recreationally and medicinally How does it work? As an agonist - enhances the activity of a neurotransmitter (binds at the site like the NT, keeps it in the system longer) As an antagonist - inhibits or decreases the action of the neurotransmitter
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Drugs: Self-I nduced Variations in Consciousness Types of Drugs (see your book for greater detail) Depressants Stimulants Opiates Hallucinogens Marijuana MDMA
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Unformatted text preview: Drugs: Self-I nduced Variations in Consciousness Most drugs of abuse work on the DA system Why DA? recall that it is the reward neurotransmitter The original research Olds and Milner (1953) Were originally studying sleep but attached an electrode to a particular part of the brain (the medial forebrain bundle located in the hypothalamus) When the mouse pressed the bar, it stimulated the area This was so pleasurable that the mouse would press the bar as many as 2000 times/minute! The shock appeared to be more reinforcing than food, water, or sex...
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Consciousness PP - Drugs: Self-I nduced Variations in...

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