Neural basis of hierarchical visual form processing of Japanese Kanji characters.
Neural basis of hierarchical visual form processing of Japanese Kanji characters.
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DOI：
10.1002/brb3.413
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发表时间：
2015-12
影响因子：
3.1
通讯作者：
Uno A
中科院分区：
文献类型：
--
作者：
Higuchi H;Moriguchi Y;Murakami H;Katsunuma R;Mishima K;Uno A
我们研究了阅读日文汉字字符的神经加工，这涉及到独特的层次化视觉加工，包括识别汉字特有的视觉成分，如“部首”。我们进行了功能磁共振成像来测量大脑对分层视觉刺激的反应，这些视觉刺激包括(1)真实汉字字符(具有语义信息的完整结构)、(2)伪汉字字符(没有完整字符结构的子部件)、(3)人造字符(字符片段)和(4)棋盘(简单光刺激)。正如我们预期的那样，对不同类型刺激的激活峰值在左侧枕颞部视区内沿后-前轴排列，从片断(3)到完整字符(1)。此外，只有真正的汉字才能在左侧颞下区和语言区(左额下三角区)之间产生功能性连接，而假汉字则在左侧颞下区和双侧小脑和左壳核之间产生连接。日语汉字的视觉加工发生在左侧枕颞叶皮质，在该区域内具有明确的层次结构，使得神经激活区分汉字字符的片段、子部件和语义中的元素，元素之间具有不同的连接到远程区域的模式。
We investigated the neural processing of reading Japanese Kanji characters, which involves unique hierarchical visual processing, including the recognition of visual components specific to Kanji, such as “radicals.” We performed functional MRI to measure brain activity in response to hierarchical visual stimuli containing (1) real Kanji characters (complete structure with semantic information), (2) pseudo Kanji characters (subcomponents without complete character structure), (3) artificial characters (character fragments), and (4) checkerboard (simple photic stimuli). As we expected, the peaks of the activation in response to different stimulus types were aligned within the left occipitotemporal visual region along the posterior–anterior axis in order of the structural complexity of the stimuli, from fragments (3) to complete characters (1). Moreover, only the real Kanji characters produced functional connectivity between the left inferotemporal area and the language area (left inferior frontal triangularis), while pseudo Kanji characters induced connectivity between the left inferotemporal area and the bilateral cerebellum and left putamen. Visual processing of Japanese Kanji takes place in the left occipitotemporal cortex, with a clear hierarchy within the region such that the neural activation differentiates the elements in Kanji characters' fragments, subcomponents, and semantics, with different patterns of connectivity to remote regions among the elements.
影响因子：
4.5
作者：
Kwon JC;Lee HJ;Chin J;Lee YM;Kim H;Na DL
通讯作者：
Na DL