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PY 101, Week 2 Notes

by: Hannah Tomlinson

PY 101, Week 2 Notes Psychology 101

Hannah Tomlinson

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About this Document

Drugs and Alcohol
Intro to Psychology
Class Notes
25 ?




Popular in Intro to Psychology

Popular in Psychology

This 2 page Class Notes was uploaded by Hannah Tomlinson on Saturday September 3, 2016. The Class Notes belongs to Psychology 101 at University of Alabama - Tuscaloosa taught by Rachel in Fall 2016. Since its upload, it has received 9 views. For similar materials see Intro to Psychology in Psychology at University of Alabama - Tuscaloosa.


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Date Created: 09/03/16
8/29 Drugs and Alcohol Drugs affect neurotransmission  Imitate, stimulate, or block neurotransmitters  Will provide more or less neurotransmitters -Increase number of action potentials -Release neurotransmitters from vesicles with or without an action potential -Block reuptake or block receptors Prevent vesicles from releasing the neurotransmitters  It can be left in the synapse  Changes up chemicals of the body and changes up communication Alcohol  Increases dopamine, decreases everything else (balance, speech, brain activity, etc.)  Inhibits the effects of glutamate (means excitatory) in the cerebellum (part of the brain for balancing), cutting off communication. (Aka throws off coordination)  Prevents dopamine (happiness and reward) from breaking down in the nucleus accumbens -Dopamine isn’t being broken down; you feel good/confident  Increases levels of norepinephrine (arousal) -You do stuff you wouldn’t usually do sexually  Alcohol binds to GABA receptors causing the cell to hyperpolarize (less firing) -Body is calming down; slurred words; when GABA kicks in, the cells don’t communicate  Decreased activity in the prefrontal cortex and hippocampus -You won’t remember the night/things; judgement is impaired Marijuana  THC increases dopamine  THC encourages cannabinoid receptors to mimic other neurotransmitters in the limbic system, cerebellum, and basal ganglia -Decreases acetylcholine in the hippocampus (memory) -Decreasing action of other neurotransmitters in those areas -More likely to affect hippocampus short term when using drugs Rohypnol (a Benzodiazepine)  Slows body down  Trade name for flunitrazepam (aka date rape drug, roofies)  Depresses the central nervous system by binding to GABA receptors -Increases chance GABA binds to the receptor -GABA is an inhibitory signal  Potentially lethal when mixed with alcohol or other “depressants” because when 2 depressants are added together it slows the body down more quickly Treatment : SSRI (Prozac)  Selective Serotonin Reuptake Inhibitors  Widely used because it treats many disorders, such as depression and anxiety  Works by blocking reuptake of serotonin into the presynaptic neuron, causing serotonin to remain in the synapse longer


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