The joint development of hemispheric lateralization for words and faces.
The joint development of hemispheric lateralization for words and faces.
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DOI：
10.1037/a0029503
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发表时间：
2013-05
影响因子：
4.1
通讯作者：
Behrmann, Marlene
中科院分区：
文献类型：
--
作者：
Dundas, Eva M.;Plaut, David C.;Behrmann, Marlene
与行为研究的长期发现一致，神经影像学研究发现，在成年人的下颞叶皮层区域，该区域的右半球的面部选择性高于左半球，相反，该区域的左半球的单词选择性高于右半球。尚未确定的是这种成熟的半球专业化模式是如何在发展过程中出现的。目前的研究考察了儿童、青少年和成年人在一项辨别任务中，大脑半球在面部和言语方面的优势，其中刺激在任一半脑中短暂呈现。成年人在面部和文字辨别方面分别表现出预期的左视场优越性和右视场优越性，而青少年仅表现出对于文字辨别的右视场优越性，而对于面部辨别则没有表现出视场优越性。尽管孩子们的整体准确率低于年长组，例如青少年，但他们对单词表现出右视野优势，但对面部没有表现出视野优势。有趣的是，面部偏侧化的出现与阅读能力相关，这是在回归年龄、定量推理得分和面部辨别准确性后通过独立标准化测试进行测量的。总而言之，这些发现表明，面部和单词识别的半球组织并不是独立发展的，而且较早出现的单词偏侧化可能会驱动较晚的面部偏侧化。提出了一种理论解释，其中视觉表现的竞争在发展过程中展开，以解释这些发现。
Consistent with longstanding findings from behavioral studies, neuroimaging investigations have identified a region of the inferior temporal cortex that, in adults, shows greater face-selectivity in the right than left hemisphere and, conversely, a region that shows greater word-selectivity in the left than right hemisphere. What has not been determined is how this pattern of mature hemispheric specialization emerges over the course of development. The current study examines the hemispheric superiority for faces and words in children, young adolescents and adults in a discrimination task in which stimuli are presented briefly in either hemifield. Whereas adults showed the expected left and right visual field superiority for face and word discrimination, respectively, the young adolescents demonstrated only the right field superiority for words and no field superiority for faces. Although the children's overall accuracy was lower than that of the older groups, like the young adolescents, they exhibited a right visual field superiority for words but no field superiority for faces. Interestingly, the emergence of face lateralization was correlated with reading competence, measured on an independent standardized test, after regressing out age, quantitative reasoning scores, and face discrimination accuracy. Taken together, these findings suggest that the hemispheric organization of face and word recognition do not develop independently, and that word lateralization, which emerges earlier, may drive later face lateralization. A theoretical account in which competition for visual representations unfolds over the course of development is proposed to account for the findings.
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影响因子：
3.2
作者：
Devlin, Joseph T.;Jamison, Helen L.;Gonnerman, Laura M.;Matthews, Paul M.
通讯作者：
Matthews, Paul M.
DOI：
10.1093/cercor/bhq215
发表时间：
2011-06
期刊：
Cerebral cortex (New York, N.Y. : 1991)
影响因子：
--
作者：
Cohen Kadosh K;Cohen Kadosh R;Dick F;Johnson MH
通讯作者：
Johnson MH
影响因子：
2.7
作者：
Guo, Kun;Meints, Kerstin;Mills, Daniel
通讯作者：
Mills, Daniel
影响因子：
3.2
作者：
Aylward, EH;Park, JE;Meltzoff, AN
通讯作者：
Meltzoff, AN
影响因子：
3.4
作者：
DIAMOND, R;CAREY, S;BACK, KJ
通讯作者：
BACK, KJ