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The origin of the mammalian brain as a case of evolutionary irreversibility
1Neuroscience Program, University of California, Los Angeles 90024.
Medical Hypotheses
|August 1, 1992
Abstract:
The origin of the mammalian neocortex is usually considered as an improvement in the design of the brain. I suggest that the mammalian neocortex arose as a consequence of contingent adaptations in which there was no specific selection for more elaborate cognitive abilities. This perspective differs from the current view of brain evolution as a progressive phenomenon towards increased intelligence.