PSYCH101 Lecture Notes - Lecture 17: Camellia Sinensis, Crack Cocaine, Oolong

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Paul Wehr

Document Summary

Psychoactive drugs - chemical substances acting on the cns that alter mood, perception, memory, or behaviour. 4 main classes: stimulants - increase cns activity; people who use these (nicotine, caffeine, cocaine, amphetamines) really like them! Euphoric experience, e. t. c: depressants - decrease cns activity, opiates - pain relief & euphoria, psychedelics - distort sensory info. What were the 3 main motivations for use: spiritual (entheogens ex. Chew or smoke leaves - chewing is enough to get stimulating effect. Nicotine is stimulant because increases cns activity (as all stimulants do) Widespread in natural world because of pesticides (paralyzes insects due to strong impact) Many different types of teas, but only 2 types of tea plants and really only them accounts for world supply of tea small leaf (dry, high environments), All teas (black, green, white, oolong, puerh) come from camellia sinensis plant*