His group uses imaging techniques such as PET, MEG and functional MRI to study language processing in the brain. For example, he examined how patients with language disorders (such as patients with aphasia, dyslexia, autism) compensate for them in other ways. He studied the processes involved in speaking and found that subjects know the grammatical form of a word around 40 milliseconds earlier than the first syllable and that another 120 milliseconds pass before the complete pronunciation is ready. His research is also concerned with the interaction of linguistic functions with others (such as gestures) and has also examined other cognitive abilities and the social implications of cognitive neuroscience.[3][4][5]