Sun Guoxiao, Zhang Liwei, Vine Samuel J, Wilson Mark R
1 Beijing Sport University.
2 University of Exeter.
J Sport Exerc Psychol. 2016 Oct;38(5):458-469. doi: 10.1123/jsep.2016-0012. Epub 2016 Oct 13.
Longer quiet eye (QE) periods are associated with better performance across a range of targeting and interceptive tasks. However, the direction of this relationship is still unclear. The two studies presented aimed to narrow this knowledge gap by experimentally manipulating QE duration-by delaying its onset or by truncating its offset-in an aiming interceptive task. In Experiment 1, the early trajectory was occluded, causing significantly shorter QE durations and worse subsequent performance. In Experiment 2, both early and/or late trajectory were occluded. Performance was degraded by the occlusion of either early or late information, and the worst performance occurred when both the early and late trajectory were occluded. Taken together, the results suggest that QE is not a by-product of performance but instead plays a causal role in supporting the interception of a moving target through a combination of preprogramming and online control processes.
较长的静视期（QE）与一系列目标定位和拦截任务中的更好表现相关。然而，这种关系的方向仍不明确。所呈现的两项研究旨在通过在瞄准拦截任务中实验性地操纵QE持续时间——通过延迟其开始或截断其结束——来缩小这一知识差距。在实验1中，早期轨迹被遮挡，导致QE持续时间显著缩短，随后的表现更差。在实验2中，早期和/或晚期轨迹被遮挡。早期或晚期信息的遮挡都会使表现下降，而当早期和晚期轨迹都被遮挡时，表现最差。综合来看，结果表明QE不是表现的副产品，而是通过预编程和在线控制过程的组合，在支持对移动目标的拦截中发挥因果作用。
