Outline 36 2008 Vertebrate brain

Outline 36 2008 Vertebrate brain - Lecture 36: VERTEBRATE...

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Lecture 36: VERTEBRATE BRAIN Summary. The vertebrate brain is the most complex organ in any organism, with 10 billion to 100 billion neurons in the human brain and over a hundred different neuronal cell types. Today we discuss the relationships of central and the peripheral nervous systems and focus on the brain. Although the various parts of the brain scale together in size, and brain size scales with body size for a large number of mammals, the brains of monkeys and apes, and of dolphins and porpoises are proportionately much larger for their body size than is the case in other mammals. Within the primates, brain size scales with body size, but after the human lineage split from chimps 6 million years ago our brain size has increased exponentially, with little increase in body size. We will examine how the cerebral cortex, the largest and evolutionarily newest part of the brain, is regionally specialized to perform different tasks of analyzing sensory information and producing appropriate motor behavior. To understand how we know this information
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Outline 36 2008 Vertebrate brain - Lecture 36: VERTEBRATE...

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