Abrahamson, D. (2008, December) The abduction of Peirce: The missing link between perceptual judgment and mathematical reasoning? 

Invited lecture at the Townsend Working Group in Neuroscience and Philosophy (A. Rokem, J. Stazicker, & A. Noë, Organizers), December 9.

http://www.archive.org/details/ucb_neurophilosophy_2008_12_09_Dor_Abrahamson