PS100 Lecture Notes - Lecture 17: Hallucinogen, Caffeine, Depressant
Document Summary
Compensatory response - body not prepared for the dosage. Tolerance- over time we build up a tolerance, so we have to up the dose to get the same response. Psychological impact and how they interact (*know the chart)- what neurotransmitters are found in what drugs and how they affect us. Moderate doses: reduce anxiety; produce euphoria (good feeling) High doses: slow vital life processes, can be fatal. Decreases activity of glutamate (major excitatory neurotransmitter) Combination creates "high" and then "down" phase (inhibits neurotransmitters) Increase blood pressure, heart rate, respiration, alertness (keeps you awake, and allows you to focus: pattern: big high, big low. Everyday: caffeine- addictive/withdrawal: examples: cocaine (increases activity of norepinephrine, dopamine by blocking uptake, chronic use leads to cognitive impairment, brain damage. Increases energy and alertness, produces feelings of euphoria and well being. Increase dopamine activity: continuous heavy use can produce amphetamine psychosis. Opium= product of poppy plant- opiates: morphine, codeine, heroin.
