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Paul Broca: The Origin of Brain Science of Language Kuniyoshi L. Sakai 1 1Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo Keyword: ブローカ失語 , ブローカ野 , 前頭葉 , 文法中枢 , 機能局在 , Broca's aphasia , Broca's area , frontal cortex , grammar center , functional localization pp.1275-1279
Published Date 2025/12/1
DOI https://doi.org/10.11477/mf.188160960770121275
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Abstract

Pierre Paul Broca studied the brains of patients with articulatory language deficits and reported that articulatory function is localized in the frontal cortex of the left hemisphere. This discovery of functional localization laid the foundation of neuroscience in general and marked the beginning of brain science of language. According to recent reexaminations of the patients' brains, the lesions responsible for apraxia of speech may instead involve the insula or medial fiber connections. Based on the results of functional neuroimaging and lesion studies, we have identified a “grammar center” in the left inferior frontal gyrus, long regarded as “Broca's area.” Therefore, the traditional view that Broca's area is the sole center of speech production requires revision.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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