PSYCH 101 Lecture Notes - Lecture 9: Drug Tolerance, Atropine, Psychological Dependence
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PSYCH 101 Full Course Notes
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***chart 2: blood brain barrier lining of packed cells that allows vital nutrients to pass though so neurons can function, recall: agonists - increases neurotransmitter activity, by making deactivation difficult, stimulating neurotransmitter production, etc. Example: opiates that relieve pain by activating receptor sites that receive endorphins. Example: amphetamines cause neurons to release greater amounts of dopamine and norepinephrine: recall: antagonists inhibits or decreases neurotransmitter action, by preventing binding or reducing neuron"s ability to synthesize/release neurotransmitters. Direct-action antagonists bind to same receptor area as neurotransmitters so that they have nowhere to go. Example: atropine (?) decrease salivation during surgery. Drug can be addictive without producing tolerance or withdrawal. People can be dependent even if there"s only mild withdrawal. Many drug users who quit will start again: what influences drug behaviors. Biological factors if parents have addictions, you might have a tendency to as well. Beliefs and expectancies can influence drug reactions.
