APA Dictionary of Psychology

an early theory of speech that integrated the roles of the receptive language cortex (Wernicke’s area) and the language production cortex (Broca’s area). Also called Wernicke’s theory. [first suggested in 1874 by Karl Wernicke (1848–1905), German neurologist; revived and then extended by Norman Geschwind (1926–1984), U.S. neuroscientist]