HMB200H1 Lecture Notes - Ventral Root Of Spinal Nerve, Frontal Lobe, Action Potential
Document Summary
Lecture 1: history of neuroscience. Egypt: life depends on beating heart and moving blood. Life depends on moving fluid due to the beating heart. Threw brain out, thought it was useless kept heart and internal organs (thought essential) This idea carried on by aristotle (also believed heart was a critical organ for mental activity) Greece: aristotle (heart) vs. hippocrates (brain is essential) Air, water, fire, earth : 4 elements. Rome: galen (150- 210 a. d. ) brain is center of mental activity brain injury studies. Looked at the 4 elements in the body tissues and saw moving water/fluid. Ventricles and 4 humours : blood, phlegm, black and yellow bile. Humours are moving fluids moving of blood creates happy feeling. Movement of phlegm creates depression and slowing down. Movement of bile creates another emotion. Moving of each humour produces a different feeling of emotions. 100 years before aristotle but aristotle was stubborn with his belief.
