Holloway Steven R, Náñez José E, Seitz Aaron R
Department of Psychology, Arizona State University, Tempe, Arizona, United States of America.
Department of Social and Behavioral Sciences, Arizona State University, Phoenix, Arizona, United States of America.
PLoS One. 2013 Dec 20;8(12):e84010. doi: 10.1371/journal.pone.0084010. eCollection 2013.
This study explored the relation between visual processing and word-decoding ability in a normal reading population. Forty participants were recruited at Arizona State University. Flicker fusion thresholds were assessed with an optical chopper using the method of limits by a 1-deg diameter green (543 nm) test field. Word decoding was measured using reading-word and nonsense-word decoding tests. A non-linguistic decoding measure was obtained using a computer program that consisted of Landolt C targets randomly presented in four cardinal orientations, at 3-radial distances from a focus point, for eight compass points, in a circular pattern. Participants responded by pressing the arrow key on the keyboard that matched the direction the target was facing. The results show a strong correlation between critical flicker fusion thresholds and scores on the reading-word, nonsense-word, and non-linguistic decoding measures. The data suggests that the functional elements of the visual system involved with temporal modulation and spatial processing may affect the ease with which people read.
本研究探讨了正常阅读人群中视觉处理与单词解码能力之间的关系。在亚利桑那州立大学招募了40名参与者。使用光学斩波器通过极限法，用直径1度的绿色（543纳米）测试视野评估闪烁融合阈值。使用阅读单词和解码无意义单词测试来测量单词解码。使用一个计算机程序获得非语言解码测量值，该程序由兰多尔特C形目标组成，这些目标以圆形模式随机呈现在四个基本方向上，距焦点3个径向距离，共八个方位点。参与者通过按下与目标所朝方向匹配的键盘上的箭头键做出反应。结果显示，临界闪烁融合阈值与阅读单词、解码无意义单词和非语言解码测量的分数之间存在很强的相关性。数据表明，与时间调制和空间处理相关的视觉系统功能元件可能会影响人们阅读的难易程度。
