PSYCH101 Lecture Notes - Lecture 4: Homeostasis, Reuptake, Morphine

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Richard Ennis

Document Summary

100 billion neuronal connections (# of humans who have ever lived) 100 trillion connections between neurons (# of emails sent worldwide in the past year) 621, 000 kilometres length of neurons if laid end to end (long enough to go to the moon & back then wrap around the earth 6 times) Luigi galvani connected lightning rod to dead frogs leg and waited for storm. Proving that recently dead muscle tissue can respond to external electrical stimuli & muscles/nerve cells have intrinsic electrical force discovered. Otto loewi the night before easter sunday he awoke & scribbled notes & attempted to decipher next morning. He awoke again at 3 & the idea returned. It was the design of an experiment to find out whether the hypothesis of chemical transmission that he had said 17 years ago. He went to the lab & preformed experiment on frogs heart.