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combine to other mental structures
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and into different subparts of the brain
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and finally to the whole thing.
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So, one of the discoveries of psychology
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is that the basic unit of the brain appears to be the neuron.
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The neuron is a specific sort of cell
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and the neuron has three major parts,
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as you could see illustrated here .
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Neurons actually look quite different from one another
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but this is a typical one.
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There are the dendrites, these little tentacles here.
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And the dendrites get signals from other neurons.