he was interested in a particular brain disorder called aphagia, disorder of language. and he was interested in whether that could be localized in the brain and he found first one and then a group of patients who had a specific form of language disorder. they could understand language perfectly well but couldn't express themselves in language and when they died and came to autopsy found that invariably the left side of the brain and the front of the brain was a lesion. about 15 years later, carl wernicke, a injure manureologist picked up the study of aphagia and he found the patient who had the mirror image clinical picture. he could articulate, could express language but couldn't understand it. when he died and came to autopsy he had a lesion also on the left side and the lesion was at the back of the brain. moreover, he realized that the lesion of his patient and broca's patient, those two areas now called wernicke's area and broca's area, are interconnected. that made him realize that complex neurological disorders are not due to a lesion at one site but a lesion at