Mechanism of Neologisms in Aphasia

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  • Miyazaki Yasuhiro
    Department of Rehabilitation, Japanese Red Cross Medical Center (currently with Department of Sensory Sciences, Kawasaki University of Medical Welfare.
  • Tanemura Jun
    Department of Sensory Sciences, Kawasaki University of Medical Welfare
  • Ito Eriko
    Department of Sensory Sciences, Kawasaki University of Medical Welfare Medical Division, Yokohama Rehabilitation Center

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  • 失語症者における新造語の出現機序について

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   The purpose of this study was to investigate the mechanism for speaking neologisms. The subjects were 10 aphasic patients who generated neologisms most often among other linguistic errors. The method of investigation was to analyze changes in error responses between the first assessment and one month later. The subjects were classified into four groups according to how their speech errors changed. Three patients generated phonemic paraphasias dominantly. In three other patients non-related paraphasias increased. In two patients semantic paraphasias increased, and two other patients showed verbal paraphasias and phonemic paraphasias. These differences in speech errors reflected differences in damage in language processing. These findings suggested that the causes of neologisms are the disorders at both the phonological and semantic/lexical levels.

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