Professor Richard Brown (Department of Psychology & Neuroscience, Dalhousie, University, Halifax, Nova Scotia, Canada) on “Le Gros Clark versus Zuckerman: what were their disagreements?”, at the FENS History Seminar on “History of Understanding of the Cerebral Cortex”, organised at St John’s College, University of Oxford, on 12 May 2015, by Prof. Zoltan Molnar.