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Psychology Lecture Sept 21

Psychology Lecture Sept 21 - III The Brain(CNS A...

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III. The Brain (CNS) A) Introduction - The ancient Greek was not very impressed with the brain. They assumed the brain was just there too cool the blood. - Aristotle - Hypocrates did not accept that the heart created behavior. His conclusion about the brain was “From the brain and the brain only, arise our pleasures, joys, laughter, and jests, as wells as our sorrows, pains, grief’s…” B) Tool of Discovery (how do they study the brain?) B.1) Clinical Observation - Oldest method. - The brain is inside the skull they couldn’t access it. - Did in-depth investigations (case study) to see how a tumor in this part of their brain, how is it affecting their life. - Continues to be important today B.2) Brain Manipulation - Researcher interferes with the functioning of the brain on purpose and observes to see how this interference affected the person, emotions, behavior, etc - Surgical: researcher will cut off a connecting between to brain parts, remove/destroy a brain area what does it affect - Chemical: inject a drug that is going to affect a specific brain area, watch to see what happens. (Would they still remember things, etc) - Electrical: one or two ways. One; implant electrons generate a small electrical stimulation see what it does. Two; open up skull complete and stimulate that brain with electrical stimulation - Magnetic: expose area of brain interested in studying to magnetic field, it will affect it and you observe what happens. - Optogenetics: genetically engineer neurons to respond to light, shine a laser light on the area they are interested in.
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