Professor of Surgery, University of São Paulo Medical School, São Paulo, Neurosurgeon, Albert Einstein Hospital, São Paulo, Brazil Visiting Professor of Neurosurgery, University of Virginia, USA

Professor Ribas runs a research laboratory at the Hospital Beneficência Portuguesa, focusing on microneurosurgical anatomy and on cranial neurosurgical techniques; he has published more than 50 articles, and 40 book chapters. He is a pioneer of stereoscopic publications in neurosurgical journals (Journal of Neurosurgery, December 2001, with its cover illustration), and his lectures are mostly done with 3D techniques since 1995. In 2010 his article The Cerebral Sulci and Gyri was the most accessed article of the whole Journal of Neurosurgery Publishing Group. He is a member of the editorial staff of the Neurosurgical Focus, Journal of Neurosurgery Video Supplement and reviewer for Neurosurgery, World Neurosurgery and Neurosurgical Review