Dynamic visual perception and reading development in Chinese school children
Dynamic visual perception and reading development in Chinese school children
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中国学童的动态视觉感知和阅读发展
DOI：
10.1007/s11881-010-0049-2
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发表时间：
2011-12-01
影响因子：
2.3
通讯作者：
Zhou, Xiaolin
中科院分区：
文献类型：
--
作者：
Meng, Xiangzhi;Cheng-Lai, Alice;Zhou, Xiaolin
阅读技能的发展可能在一定程度上取决于基本视觉感知的发展。发展性阅读障碍的大细胞理论认为，大细胞通路的缺陷，表现为对动态感官刺激的敏感度较低，是造成阅读困难的一部分原因。本研究通过测量连贯运动检测阈值的任务，考察了中国儿童动态视觉感知与阅读发展之间的关系。实验1比较了27名阅读障碍患者及其年龄和智商匹配的对照组在连贯运动检测任务和静态模式感知任务中的表现。结果显示，只有在前一项任务中，阅读障碍患者的阈值明显高于对照组，这表明中国的阅读障碍患者与西方的一些阅读障碍患者一样，可能存在巨细胞通路的缺陷。实验2考察动态视觉加工是否影响阅读中的特定认知过程。100名五年级儿童接受了视觉感知和阅读相关任务的测试。回归分析发现，运动检测阈值分别占11%和12%，正字法相似度判断速度和图片命名准确率随智商和词汇量的变化得到控制。静态模式检测阈值不能解释任何方差。结果表明，汉语阅读发展在一定程度上取决于动态视觉知觉及其神经通路的发展，视觉发展对汉语阅读的影响可能与正字法加工有关。
The development of reading skills may depend to a certain extent on the development of basic visual perception. The magnocellular theory of developmental dyslexia assumes that deficits in the magnocellular pathway, indicated by less sensitivity in perceiving dynamic sensory stimuli, are responsible for a proportion of reading difficulties experienced by dyslexics. Using a task that measures coherent motion detection threshold, this study examined the relationship between dynamic visual perception and reading development in Chinese children. Experiment 1 compared the performance of 27 dyslexics and their age- and IQ-matched controls in the coherent motion detection task and in a static pattern perception task. Results showed that only in the former task did the dyslexics have a significantly higher threshold than the controls, suggesting that Chinese dyslexics, like some of their Western counterparts, may have deficits in magnocellular pathway. Experiment 2 examined whether dynamic visual processing affects specific cognitive processes in reading. One hundred fifth-grade children were tested on visual perception and reading-related tasks. Regression analyses found that the motion detection threshold accounted for 11% and 12%, respectively, variance in the speed of orthographic similarity judgment and in the accuracy of picture naming after IQ and vocabulary size were controlled. The static pattern detection threshold could not account for any variance. It is concluded that reading development in Chinese depends to a certain extent on the development of dynamic visual perception and its underlying neural pathway and that the impact of visual development can be specifically related to orthographic processing in reading Chinese.