School of Education and Haddad Center for Research in Dyslexia and Learning Disabilities, Bar-Ilan University, Ramat-Gan, Israel.
Arch Clin Neuropsychol. 2013 Dec;28(8):829-36. doi: 10.1093/arclin/act076. Epub 2013 Oct 1.
Previous research has shown that individuals with DD (developmental dyslexia) demonstrated a left mini neglect on visual line (VL) bisection tasks, which has been commonly referred to as right parietal dysfunction. However, insufficient reading experience characterizes dyslexia and may call into question the validity of this interpretation, since the VL bisection task has been found to be influenced by reading habits. The current study investigated whether altered performance of individuals with DD on bisection tasks may be attributed to impaired attentional mechanisms or to insufficient reading exposure. DD and control groups performed visual and mental number line bisection tasks, which have been shown to be modulated differently by reading habits. In both tasks, the magnitude of left bisection errors was significantly larger in the DD group compared with controls. This finding suggests attentional mechanisms act differently in dyslexia and supports evidence linking dyslexia to decreased function of the left hemisphere.
先前的研究表明，DD（发展性阅读障碍）患者在视觉线（VL）二分任务中表现出左侧迷你忽略，这通常被称为右顶叶功能障碍。然而，阅读经验不足是阅读障碍的特征，这可能使这种解释的有效性受到质疑，因为已经发现 VL 二分任务受到阅读习惯的影响。本研究调查了 DD 患者在二分任务中的表现改变是否归因于注意力机制受损或阅读暴露不足。DD 和对照组执行视觉和心理数字线二分任务，这些任务已被证明受阅读习惯的不同调节。在这两个任务中，DD 组的左侧二分误差幅度明显大于对照组。这一发现表明，注意力机制在阅读障碍中表现不同，并支持将阅读障碍与左半球功能下降联系起来的证据。
