[Mechanisms of writing].
[Mechanisms of writing].
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[写作机制].
DOI：
10.4324/9780203102732-12
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Otsuki
中科院分区：
文献类型：
--
作者：
M. Otsuki
书写障碍是由各种不同的机制和病变引起的。左后下颞叶在检索字符形态图方面起着重要作用。因此，涉及该区域的病变对汉字（日语形态图）的影响比对假名（日语表音图）的影响更大。角回被认为维护检索到的字母/字符信息并将朴素信息转换为书写性能。有时，由于这种损伤，假名显性损伤会被检测到，因为在某些人中，可能有从音位呈现到书写执行过程的直接途径，而没有明确检索其形式或形态。左顶上小叶与书写执行有关，因此，该区域的病变会导致书写笔画障碍和字形不良。左侧额中回后部与选择和排列字母组成单词有关，因此该区域的病变会出现段落，特别是单词内字母的替换。近年来，键盘打字在我们的日常生活中变得越来越流行。据报道，称为打字不良的特定打字障碍反映了这种现象。据推测，语言过程和打字执行之间存在障碍。
Writing impairments are caused by various different mechanisms and lesions. The left posterior inferior temporal lobe plays the important role in retrieving the morphograms of the characters. Therefore the lesions involving this region have more effect on Kanji (Japanese morphogram) than on Kana (Japanese phonogram). The angular gyrus is considered to maintain the retrieved letter/character information and convert the naive information into writing performance. Sometimes Kana dominant impairment is detected due to this lesion because in some persons may have the direct route from phonemic presentation into writing execution process without definite retrieval of its form or morphology. The left superior parietal lobule is associated to the writing execution, thus, the lesion in this region induces the impairment of writing stroke and ill-shaped characters. The posterior part of the left middle frontal gyrus is related to select and arrange the letters to make a word, so the lesion in this area will develop paragraphia, in particular replacement of the letters within a word. Recently, the typing of the keyboard is becoming more popular in our everyday life. Reflecting this phenomenon, specific typing impairment called dystypia is reported. It is supposed that there is the impairment between linguistic process and typing execution.