Class Notes (836,997)
Canada (510,028)
Psychology (7,785)
PSYB65H3 (519)
Ted Petit (310)
Lecture

lecture notes 07 - drugs(1)

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Department
Psychology
Course
PSYB65H3
Professor
Ted Petit
Semester
Fall

Description
global drug classificationprescription drugs OTC drugs social drugs eg cocaine othertolerancemost drugs lead to decreasing behavioural effect when taking drug repeatedlytaking drugs repeatedly causes more and more neurotransmitter releasemore and more transmitter release to postsynaptic cell hyperstimulate receptorscell reduce receptors to compasate this overactivition not fire as often decrease sensitivitywithdrawalwhen stimulusdrugs is absent transmitter release back to normal but now there are fewer receptorsunderstimulateback to narmal for a while due to neurons flexibilitywithdrawal from stimulant does not threats lifewithdrawal from depressant can be severe enough to be life threateningaddiction people WANT to take drugsbehavioural dependence of drug psychological needphisical dependence of drug will cause phisical symptoms that can be measuredobserved when withdrawalmore rapid effect more addictioneg cocaine more concentratedmore rapid effectmore addictiveaddicting drugscaffeinegenerally found in tea and coffeemetabolic stimulantshift cortical EEG to arousal state and inhibit sleep most stimulants do thislittle tolerance developedwithdrawal effect headaches caffeine helps reduce headache digestive system slow down
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