Department of Psychology, The University of Tokyo, Tokyo, Japan.
Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
Sci Rep. 2024 Nov 28;14(1):29546. doi: 10.1038/s41598-024-80172-0.
The reading ability of English readers has been shown to correlate with psychophysical measurements of dynamic visual information processing. This study investigated the relationship between reading ability and dynamic visual information processing in healthy adult native Japanese readers (n = 46). Reading ability was assessed using three different tests: the Japanese Adult Reading Test (JART), transposed-letter detection task, and oral reading. Principal component analysis was performed on the scores on the three reading tests to quantify reading ability. Psychophysical thresholds were measured for contrast detection and speed discrimination with a drifting grating stimulus as well as for tracking two targets among concentrically revolving objects, providing an upper speed limit for attentional tracking. Simple correlation analysis revealed that one of the principal components correlated with the tracking speed limit. In addition, another principal component correlated with the speed-discrimination threshold, which is consistent with previous findings in English readers. These results suggest that Japanese reading ability involves at least two different processes, each sharing underlying mechanisms with visual motion and attentional processing.
英语读者的阅读能力已被证明与动态视觉信息处理的心理物理测量相关。本研究调查了健康成年母语为日语的日本读者（n=46）的阅读能力与动态视觉信息处理之间的关系。使用三种不同的测试评估阅读能力：日本成人阅读测试（JART）、转置字母检测任务和口头阅读。对三种阅读测试的分数进行主成分分析，以量化阅读能力。使用漂移光栅刺激测量对比度检测和速度辨别阈值，以及在同心旋转物体中跟踪两个目标，为注意力跟踪提供上限速度。简单相关分析显示，一个主成分与跟踪速度极限相关。此外，另一个主成分与速度辨别阈值相关，这与英语读者的先前发现一致。这些结果表明，日语阅读能力至少涉及两个不同的过程，每个过程都与视觉运动和注意力处理具有共同的潜在机制。
