User:Evolutionofbrain

articles containing something about the brain evolution on wikipedia

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Smith was the leading specialist on the evolution of the brain of his day, many of his ideas on the evolution of the primate brain still form the core of present scholarship. He proposed the following stages of development:

1. a smell dominated insectivore stage of jumping shrew-type 2. vision dominated animals with an expanded cortex of tree-shrew-tpye 3. acutely visioned, manually dexterous mammals of tarsius-type 4. monkeys 5. anthropoids using their hands to use and produce tools

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The evolution of the eye has been a subject of significant study, as a distinctive example of a homologous organ present in a wide variety of species. The development of the eye is considered by most experts to be monophyletic; that is, all modern eyes, varied as they are, have their origins in a proto-eye believed to have evolved some 540 million years ago.[1][2][3] The majority of the process is believed to have taken only a few million years, as the first predator to gain true imaging would have touched off an "arms race".[citation needed] Prey animals and competing predators alike would be forced to rapidly match or exceed any such capabilities to survive. Hence multiple eye types and subtypes developed in parallel.[citation needed]

the "evolution of the human brain"