This is a multi-disciplinary Unit, which combines expertises from different backgrounds (neurology, neuropsychology, linguistics, cognitive psychology, epistemology), with the general aim to investigate the neural mechanisms of language and high-order cognition. The experimental approaches include behavioural studies in normal subjects and in neurological patients, brain imaging using magnetic resonance techniques and positron emission tomography, and neurophysiological investigations based on evoked responses and transcranial magnetic stimulation.