Journal

The Japanese journal of neuropsychology

[Vol.33 No.4 contents]
Japanese/English

Full Text of this Article
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ArticleTitle The role of medial and orbital cerebral regions in language functions
Language J
AuthorList Mika Otsuki
Affiliation Graduate School of Health Sciences, Hokkaido University
Publication Japanese Journal of Neuropsychology: 33 (4), 229-237, 2017
Received
Accepted
Abstract Supplementary motor area (SMA) is regarded as including two separate areas; preSMA and SMAproper. Both preSMA and SMAproper have the relationship with language function, in particular preSMA has specific fiber tracts between prefrontal area and seems to have strong relation with language which has been evidenced by fMRI studies and clinical reports. Left medial frontal lesions cause supplementary motor area aphasia with characteristic symptoms: reduced spontaneous speech with prominent contrast of preserved ability of confrontation naming and severe impairment of word fluency. Right medial frontal lesions might cause affective prosody impairment. Regarding left medial parietal lesions, some clinical reports indicate a possibility of the relation between medial parietal region and language comprehension ability. Orbitofrontal lesion has been reported to show narrative impairments.
Keywords Supplementary motor area (SMA), preSMA, language, orbitofrontal cortex

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