L&S C30T Lec22

L&S C30T Lec22 - L&S C30T Drugs in the Brain...

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L&S C30T Drugs in the Brain Lecture 22: Caffeine “cannabis is the world’s third most -popular recreational dru g, after alcohol and tobacco” – Nature reviews neuroscience 8: 885-895 (Nov 2007) What about caffeine? CAFFEINE Coffee A major source of caffeine Caffeine the most widely used psychoactive drug in the world Molecular structure in reader p 45 “The ally usurped normality. It set itself against alcoholic inebriation, called itself sobriety, and began its masquerade. It is the very pervasiveness of the intoxication that makes it so invisible: it blends completely with the landscape” – p14 Coffee arabica the coffee plant Bush/ shrubby tree Originally native to northeast Africa As beans ripen, turn red known as coffee cherries Family Rubiaceae ~500 genera ~6000 species Now cultivated widely in Africa, South and Central America, Indonesia, and other tropical regions Grown for commercial production lots and lots of berries 10 billion pounds produced annually in ~50 countries Huge global market Each berry contains two coffee beans Preparation of coffee beans Berry is picked and dried briefly
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L&S C30T Lec22 - L&S C30T Drugs in the Brain...

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