Trends in Cognitive Sciences 16 (10):497-503 (2012)

Abstract
The evolution of the human brain has resulted in the emergence of higher-order cognitive abilities, such as reasoning, planning and social awareness. Although there has been a concomitant increase in brain size and complexity, and component diversification, we argue that RNA regulation of epigenetic processes, RNA editing, and the controlled mobilization of transposable elements have provided the major substrates for cognitive advance. We also suggest that these expanded capacities and flexibilities have led to the collateral emergence of psychiatric fragilities and conditions
Keywords Higher-order   Cognitive abilities   Evolution   Epigenetic processes   RNA editing
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DOI 10.1016/j.tics.2012.08.007
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