BS 182H Lecture Notes - Lecture 21: Cerebral Cortex, Neural Tube, Biological Neural Network
17 Mar 2016
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Forebrain, midbrain, and hindbrain: forebrain = cerebral hemisphere, midbrain = pons, tube folding in evolution = increased surface area, more complexity and precise mapping of the body, motor and sensory body surfaces are topographically mapped onto the cerebral cortex with association areas" nearby, differences between individuals fmri, functional magnetic resonance imaging, shows neural activity level through a blood oxygen level dependent signal. Brain: limbic system, interacts with neocortex and generates emotions, hippocampus, amygdala, thalamus, hypothalamus, central in determining importance of sensory input, amygdala activity, pleasant and aversive events better remembered than neutral events. Placebo effect: hard to measure efficiency of drugs because the mind is so powerful, you construct an interpretation of the world and information from sensations which can be manipulated, expecting a big reward helps the reward to come true, people who experience a strong desire of pleasure at the thought of an upcoming reward are more susceptible to the placebo effect.
