熟练阅读者中视觉单词识别的背侧流调制
Dorsal stream modulation of visual word recognition in skilled readers.
作者信息
Levy Tamar, Walsh Vincent, Lavidor Michal
机构信息
The Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat Gan, Israel.
出版信息
Vision Res. 2010 Apr 21;50(9):883-8. doi: 10.1016/j.visres.2010.02.019. Epub 2010 Feb 24.
We examined the hypothesis of a visual magnocellular involvement in intact reading, by testing a group of skilled readers in lateralized versions of coherent motion detection and lexical decision tasks. Motion detection thresholds were used to divide subjects into groups of poor and good motion detectors, their performance in lexical judgment of four letter string types was then compared. Although all subjects were skilled readers, good motion detectors were significantly faster than poor motion detectors when responding to words presented to the right visual field. We propose a role for the dorsal stream in facilitation of word recognition in LH language areas.
我们通过在连贯运动检测和词汇判定任务的侧化版本中测试一组熟练读者,检验了视觉大细胞参与正常阅读这一假设。运动检测阈值被用于将受试者分为运动检测能力差和运动检测能力好的两组,然后比较他们在四种字母串类型的词汇判断中的表现。尽管所有受试者都是熟练读者,但当对呈现于右视野的单词做出反应时,运动检测能力好的受试者比运动检测能力差的受试者显著更快。我们提出背侧通路在促进左半球语言区域的单词识别中发挥作用。