Are we humans simply remodelled apes? Chimps with a tweak? Is the difference between our genomes so minuscule it justifies the argument that our cognition and behaviour must also differ from chimps by barely a whisker? If “chimps are us” should we grant them human rights? Or is this one of the biggest fallacies in the study of evolution? NOT A CHIMP argues that these similarities have been grossly over-exaggerated - we should keep chimps at arm’s length. Are humans cognitively unique after all?
Sunday, 4 July 2010
Our Brains Are More Like Birds Than We Thought
In my chapter CLEVER CORVIDS I begin by pointing out that recent research reveals that the parts of the embryonic mammalian brain that eventually form the cortex arise from similar regions in birds. Birds are not so bird-brained after all. Not surprisingly, certain birds - like corvids and parrots - turn out to be exceptionally clever - rather than the robotic automata all birds were recently thought to be. This article supports this revisionist view of bird brains. It reports the work of Harvey Karten, and his group, at UC San Diego - long champions of bird brain-power - who compared a part of the chicken telencephalon which has the same duties as the mammalian auditory cortex and found it has the same laminar and columnar arrangement of neurons.
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