Karlen, SJ and Krubitzer, L. (2006) The evolution of the neocortex in mammals: intrinsic and extrinsic contributions to the cortical phenotype. In: Percept, Decision, Action: Bridging the Gaps; Chadwick DJ, Diamond M, and Goode J (Eds.), Novartis Foundation Symposium 270 (pp. 146-163). John Wiley and Sons Ltd., Chichester, UK.