PY 101, Week 2 Notes
PY 101, Week 2 Notes Psychology 101
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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