Participation of the left posterior inferior temporal cortex in writing and mental recall of kanji orthography - A functional MRI study
Participation of the left posterior inferior temporal cortex in writing and mental recall of kanji orthography - A functional MRI study
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DOI：
10.1093/brain/123.5.954
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发表时间：
2000-05-01
期刊：
影响因子：
14.5
通讯作者：
Shibasaki, H
中科院分区：
文献类型：
--
作者：
Nakamura, K;Honda, M;Shibasaki, H
为了研究书写汉字（形态图）的神经心理机制，我们对10名正常志愿者进行了功能性磁共振成像（fMRI），他们都是右撇子，母语是日语。实验范式包括假名到汉字的转录、汉字正字法的心理回忆和口头阅读以及假名词的语义判断。前两个任务需要手动和心理转录的视觉上呈现的假名词成汉字，分别，而最后两个任务涉及语言处理的同一组刺激词没有召回的汉字。转录和心理回忆任务产生了左后下颞叶皮层（PITC）的偏侧激活。相比之下，无论是口头阅读还是语义判断都没有产生类似的激活区域。这些结果，在良好的病变数据，提供了收敛的证据表明，左PITC通过检索他们的视觉图形图像在书写汉字中起着重要的作用，并建议语言特定的大脑组织的写作。这组功能磁共振成像实验还提供了新的神经成像数据，用于研究使用非字母语言的人的基本语言功能的皮层定位。
To examine the neuropsychological mechanisms involved in writing kanji (morphograms), we used functional MRI (fMRI) in 10 normal volunteers, all right-handed, native Japanese speakers. The experimental paradigms consisted of kana-to-kanji transcription, mental recall of kanji orthography and oral reading and semantic judgement of kana words. The first two tasks require manual and mental transcription of visually presented kana words into kanji, respectively, whereas the last two tasks involve language processing of the same set of stimulus words without recall of kanji. The transcription and mental recall tasks yielded lateralized activation of the left posterior inferior temporal cortex (PITC). By contrast, neither oral reading nor semantic judgement produced similar activation of the area. These results, in good accordance with lesion data, provide converging evidence that the left PITC plays an important role in writing kanji through retrieval of their visual graphic images, and suggest language-specific cerebral organization of writing. The set of fMRI experiments also provides new neuroimaging data on the cortical localization of basic language functions in people using a non-alphabetical language.