Visual memory transformations in dyslexia
Visual memory transformations in dyslexia
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DOI：
10.2466/pms.104.3.881-891
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发表时间：
2007-06-01
影响因子：
1.6
通讯作者：
Boubert, Laura
中科院分区：
文献类型：
--
作者：
Barnes, James;Hinkley, Lisa;Boubert, Laura
表征动量是指观察者对暗示运动的图片的再认记忆的扭曲，这是由于一种自动的心理过程，这种心理过程沿着图片的暗示轨迹进行外推。神经影像学证据表明，在大细胞视觉通路的活动是必要的代表性的势头发生。有人提出，患有阅读障碍的人有一个大细胞赤字，所以有人假设，这些人会表现出减少或缺乏代表性的势头。在这项研究中，30名患有阅读障碍的成年人和30名年龄匹配的对照组在两项任务上进行了比较，一项是线性任务，另一项是旋转任务，这两项任务先前已经引起了代表性动量效应。分析表明，两组的表现显着差异，与诵读困难组有一个减少的敏感性，代表性的势头在线性和旋转方向。研究结果强调，时空处理的缺陷可能有助于阅读障碍的知觉轮廓。
Representational Momentum refers to observers' distortion of recognition memory for pictures that imply motion because of an automatic mental process which extrapolates along the implied trajectory of the picture. Neuroimaging evidence suggests that activity in the magnocellular visual pathway is necessary for representational momentum to occur. It has been proposed that individuals with dyslexia have a magnocellular deficit, so it was hypothesised that these individuals would show reduced or absent representational momentum. In this study, 30 adults with dyslexia and 30 age-matched controls were compared on two tasks, one linear and one rotation, which had previously elicited the representational momentum effect. Analysis indicated significant differences in the performance of the two groups, with the dyslexia group having a reduced susceptibility to representational momentum in both linear and rotational directions. The findings highlight that deficits in temporal spatial processing may contribute to the perceptual profile of dyslexia.