Abstract:
:We report a 60-year-old right-handed Japanese man who showed an isolated persistent typing impairment without aphasia, agraphia, apraxia or any other neuropsychological deficit. We coined the term 'dystypia' for this peculiar neuropsychological manifestation. The symptom was caused by an infarction in the left frontal lobe involving the foot of the second frontal convolution and the frontal operculum. The patient's typing impairment was not attributable to a disturbance of the linguistic process, since he had no aphasia or agraphia. The impairment was not attributable to the impairment of the motor execution process either, since he had no apraxia. Thus, his typing impairment was deduced to be based on a disturbance of the intermediate process where the linguistic phonological information is converted into the corresponding performance. We hypothesized that there is a specific process for typing which branches from the motor programming process presented in neurolinguistic models. The foot of the left second frontal convolution and the operculum may play an important role in the manifestation of 'dystypia'.
journal_name
Eur Neuroljournal_title
European neurologyauthors
Otsuki M,Soma Y,Arihiro S,Watanabe Y,Moriwaki H,Naritomi Hdoi
10.1159/000047971keywords:
subject
Has Abstractpub_date
2002-01-01 00:00:00pages
136-40issue
3eissn
0014-3022issn
1421-9913pii
47971journal_volume
47pub_type
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journal_title:European neurology
pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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更新日期:2010-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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更新日期:2019-01-01 00:00:00
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