Category Anatomy

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Previous chapters may have hinted that the parts of the nervous system are interconnected in rigid, immutable ways, but this is far from accurate. The details of the nervous system are much too complex to be completely laid out genetically.…

We seldom perceive things in a completely neutral fashion. Various sights and sounds make us happy, sad, or angry; some tastes and smells are extremely gratifying, others disgusting. Such feelings engendered by sensory inputs are ultimately the result of brains…

The cerebral cortex is a sheet of neurons and their interconnections. About 1800 cm 2 (2 ft 2 ) in surface area, the cortex covers the corrugated surface of the cerebral hemispheres in a layer just a few millimeters thick. This…