ABSTRACT

Previous research has revealed conflicting results with regard to the role of the magnocellular visual system in reading and dyslexia. In order to investigate this further, the present study examined the relationship between performance on two magnocellular tasks (temporal gap detection and coherent motion), reading rate (oral and silent), and rapid letter naming (serial and isolated naming). Results showed that in a sample of 83 college students magnocellular performance was not significantly correlated with reading rate or rapid letter naming. Equivalence test analyses showed all correlations between magnocellular performance and reading rate or rapid letter naming to be within the bounds of −0.3 to 0.3. This provides evidence against the idea that having low magnocellular performance will result in poor reading ability. In opposition to the magnocellular deficit theory of dyslexia, these results suggest that a magnocellular deficit is unlikely the primary cause of individual differences in reading rate in adults.

摘要

先前的研究揭示了关于大细胞视觉系统在阅读和阅读障碍中的作用的矛盾结果。为了进一步对此进行研究，本研究检查了两个宏细胞任务的性能（时间间隙检测和连贯运动），阅读率（口语和沉默）以及快速字母命名（串行和孤立命名）之间的关系。结果显示，在83名大学生的样本中，大细胞性能与阅读率或快速字母命名没有显着相关。等效性测试分析显示，宏细胞性能与阅读率或快速字母命名之间的所有相关性均在-0.3至0.3的范围内。这提供了反对以下观点的证据，即低细胞增殖能力将导致较差的阅读能力。