Manfred Fahle is Head of the Institute of Brain Research IV and the Unit for Human Neurobiology at the University of Bremen and a Visiting Professor at University College London, Institute of Ophthalmology.

Tomaso A. Poggio is Eugene McDermott Professor in the Department of Brain and Cognitive Sciences at MIT, where he is also Director of the Center for Brains, Minds, and Machines and Codirector of the Center for Biological and Computational Learning. He is coeditor of Perceptual Learning (MIT Press).