Lim Jongil
1 Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign.
Percept Mot Skills. 2015 Oct;121(2):509-27. doi: 10.2466/24.30.PMS.121c16x4. Epub 2015 Oct 7.
The perceptual process of obtaining and using visual information plays a critical role in determining the quality of interception performance. Eye-movement characteristics and their association with interception accuracy where the constraints imposed on the task influence the eye-movement control are not well understood. The effects of spatial and temporal constraints were examined and associated with target motion on interception accuracy and gaze control strategy. Twenty-four (M = 28 yr., SD = 10; 10 women) inexperienced dart throwers volunteered for the study. Eye movements were measured while the participants attempted to intercept a horizontally moving target with a thrown dart. A mixed design experiment was employed with a between- (specification of interception point) and a within- (target speed) subjects factor. As target speed increased, spatial errors about the moving target increased but temporal errors decreased. Specifying a fixed location for target interception resulted in greater errors about the moving target. The point of gaze tended to center on the interception point, and this became more evident with increased target speed and the specification of a fixed interception point. The experimental findings provide support for a visual search strategy that exhibits compliance with the constraints of the task.
获取和使用视觉信息的感知过程在决定拦截性能的质量方面起着关键作用。在任务施加的约束影响眼动控制的情况下，眼动特征及其与拦截准确性的关联尚未得到很好的理解。研究了空间和时间约束的影响，并将其与目标运动对拦截准确性和注视控制策略的影响相关联。24名（平均年龄M = 28岁，标准差SD = 10；10名女性）没有经验的飞镖投掷者自愿参与了这项研究。在参与者试图用投掷的飞镖拦截水平移动的目标时，测量他们的眼动。采用了混合设计实验，其中包括一个组间因素（拦截点的指定）和一个组内因素（目标速度）。随着目标速度的增加，关于移动目标的空间误差增加，但时间误差减小。指定目标拦截的固定位置会导致关于移动目标的误差更大。注视点倾向于集中在拦截点上，并且随着目标速度的增加和固定拦截点的指定，这种情况变得更加明显。实验结果为一种符合任务约束的视觉搜索策略提供了支持。
