PSYCH-101 Lecture Notes - Lecture 17: Gastrointestinal Tract, Gateway Drug Theory, Operant Conditioning
9 Jul 2020
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Use and effects: most widely used illegal drug, medical marihuana. Can be effective in treating nausea and vomiting associated with chemotherapy, appetite loss in aids patients, eye disease (glaucoma), muscle spasticity. Thc receptors are located throughout the brain, including the hippocampus, cerebral cortex: dangers. Can cause temporary changes in cognitive functioning. Can temporarily decrease secretion of various hormones and effectiveness of the immune system. High doses: may cause toxic psychoses, including delusions, paranoia, and feelings of terror. Opium, morphine, heroin: opiates are classified as narcotics, about 136,00 americans use heroin, opiates such as opium, morphine, and heroin produce three primary effects. Opiate euphoria (state between waking and sleeping) Brain had naturally occurring receptors for opiates. Brain also produces morphine- like chemicals called endorphins. Brain will produce less of its own endorphins. Methadone injections used to treat heroin addiction in great. United states views heroin addiction as criminal problem, so limited medical treatment available.
