Yosef Grodzinsky is a Professor at ELSC and at the Department of cognitive Science at the Hebrew University. He is also a Visiting Professor at the Institute of Neuroscience and Medicine (INM-1), forschungszentrum Jülich. He is interested in the neural bases, processing and acquisition of formal linguistic knowledge, which he studies in both health and brain disease. He is also interested in the neural bases of logic and reasoning. Current projects: assessment and treatment of acute aphasia subsequent to stroke; language in acute neurosurgery; the neural basis of negation, logical abilities in schizophrenia, the acquisition of pronominal reference, the processing of comparatives, quantification in aphasia.