Modern Approach in the Study of Aphasia

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Abstract
4 prevalent fallacies in the study of aphasia are discussed: Emphasis on strict cerebral localization; classification of symptoms rather than study of function; inadequate observation; theoretical bias. In unilateral lobectomies by adequate objective tests, the following phenomena were observed: The threshold of perception is affected so that it takes a longer time for an individual to apprehend a situation; the number of features which can be perceived in a situation is below normal; the ability to shift from one stimulus to another is decreased ; ability to perceive logical relationships between objects deteriorates. Further progress in the re-education of aphasics must rely on a newer knowledge of the mechanisms which underlie the production of speech.

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