2.1+drugs+addiction+and+reward

2.1+drugs+addiction+and+reward - Drugs, Addiction, &...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Today’s Questions : Psychoactive drugs: What are the effects, types, addiction potential, & mechanism of action of the following classes of drugs? Addiction: What is the role of dopamine in addiction? How is addiction treated (w/ other drugs)? Is addiction hereditary? Opiates Depressants Stimulants Psychedelics Marijuana Psychoactive Drugs Mechanisms of action : Agonist: enhances effects of a neurotransmitter May block reuptake of transmitter May increase sensitivity of receptor sites May inhibit enzymes that degrade transmitter May facilitate production of transmitter May facilitate release of transmitter
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Psychoactive Drugs Mechanisms of action : Antagonist: diminishes effects of a neurotransmitter May bind to transmitter receptor sites & either NOT activate them or have reverse effect (inverse agonist) May decrease sensitivity of receptor sites May facilitate enzymes that degrade transmitter May inhibit production of transmitter May inhibit release of neurotransmitter Psychoactive Drugs Opiates ( from opium poppy plant ): Psychological effects: Analgesic–pain relief Hypnotic –sleep induction Major types: Morphine Addiction potential: very high How they work: agonist of endorphins (end ogenous morphin e) Codeine Heroin Psychoactive Drugs Depressants ( that CNS activity ): Psychological effects: Anxiolytic –anxiety reduction(low dose) Sedative–calming feeling (med. dose)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/30/2011 for the course PSY 4322 taught by Professor Natalieceballos during the Fall '11 term at Texas State.

Page1 / 7

2.1+drugs+addiction+and+reward - Drugs, Addiction, &...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online