PSY100H1 Lecture : Lecture 5
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PSY100H1 Full Course Notes
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Document Summary
The private life of the brain 2000. The mind also exists outside of the person. psychologists have not yet solved the mind-body problem. A million ants is a viable community of organisms that exhibits coordinated, self-directed behaviour. Three types of neurons: sensory (afferent) neurons (body to brain, motor (efferent) neurons (brain to body) Dendrites: receive information from other neurons and transmit towards the cell body. Cell body: keeps the neuron alive and determines whether it will fire. (transmit) Axon: extending fiber that conducts impulses away from the cell body. Myelin sheath: fatty insulation that may surround the neurons axon (speeds up transmission, and reducing the resistance) Myelin: prevents signals in adjacent cells from interfering with each other. I t speeds up the conduction of neural impulses, allowing for the speed of transmission required for perception, motor control, etc .
