Subliminal convergence of Kanji and Kana words: Further evidence for functional parcellation of the posterior temporal cortex in visual word perception
Subliminal convergence of Kanji and Kana words: Further evidence for functional parcellation of the posterior temporal cortex in visual word perception
复制标题
DOI：
10.1162/0898929054021166
复制
发表时间：
2005-06-01
影响因子：
3.2
通讯作者：
Kouider, S
中科院分区：
文献类型：
--
作者：
Nakamura, K;Dehaene, S;Kouider, S
最近的证据表明，人类枕颞区包括几个子区域，每个子区域对视觉文字的不同处理水平敏感。为了进一步探索视觉词识别的功能结构，我们采用阈下启动方法和功能磁共振成像（fMRI）对日语汉字和假名两种不同文字进行语义判断。在每个目标单词之前，潜意识会呈现相同或不同的单词，用相同或不同的脚本。从行为上看，单词重复产生了显著的启动效应，无论这些单词是以相同还是不同的文字呈现的。在神经层面上，这种交叉脚本启动与字母书写系统中视觉构词区前部和背面的左颞下叶皮层的重复抑制有关，这表明交叉脚本收敛发生在语义层面。功能磁共振成像也证实了两种文字的枕叶-颞叶视觉激活是相同的，汉字的内侧和右侧激活略多，假名的枕叶激活更大。因此，这些结果使Lis能够在后颞叶中分离出脚本特异性和脚本非依赖性区域，同时证明这两个区域都可以下意识地激活。
Recent evidence has suggested that the human occipitotemporal region comprises several subregions, each sensitive to a distinct processing level of visual words. To further explore the functional architecture of visual word recognition, we employed a subliminal priming method with functional magnetic resonance imaging (fMRI) during semantic judgments of words presented in two different Japanese scripts, Kanji and Kana. Each target word was preceded by a subliminal presentation of either the same or a different word, and in the same or a different script. Behaviorally, word repetition produced significant priming regardless of whether the words were presented in the same or different script. At the neural level, this cross-script priming was associated with repetition suppression in the left inferior temporal cortex anterior and dorsal to the visual word form area hypothesized for alphabetical writing systems, suggesting that cross-script convergence occurred at a semantic level. fMRI also evidenced a shared visual occipito-temporal activation for words in the two scripts, with slightly more mesial and right-predominant activation for Kanji and with greater occipital activation for Kana. These results thus allow Lis to separate script-specific and script-independent regions in the posterior temporal lobe, while demonstrating that both can be activated subliminally.