Visual strategies of sub-elite cricket batsmen in response to different ball velocities
Visual strategies of sub-elite cricket batsmen in response to different ball velocities
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DOI：
10.1016/j.humov.2009.10.004
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发表时间：
2010-10-01
影响因子：
2.1
通讯作者：
Dicks, M.
中科院分区：
文献类型：
--
作者：
Croft, J. L.;Button, C.;Dicks, M.
当考虑不同的拦截技能时，人类倾向于不沿着接近的目标的整个轨迹追踪到拦截点。先前对板球击球手的研究报告称，在球飞行的前100-150毫秒内，他们会对球进行视觉追踪，然后扫视到预测的球反弹位置。这项研究的目的是检查击球手在面对一系列慢到中等速度的投球速度时的眼球运动。13名次精英击球手面对来自球机的36次投球，其中投射速度在17-25毫秒（-1）的范围内随机变化。用单眼眼运动登记系统记录击球手的中央凹注视。参与者之间的凝视策略在几个方面存在差异，即在投球前的初始凝视位置（在球机的出口或“停”在预测的飞行轨迹上的位置），球释放后立即的行为（追求跟踪或扫视），以及飞行中后期的行为（预测扫视到弹跳点或“副中央凹”追求跟踪）。在当前研究中使用的投球速度范围内，可以追踪球从释放到弹跳点的轨迹，但也可以选择沿着轨迹进行扫视。根据任务的时空要求和击球手的意图，可以采用一系列视觉搜索策略来支持他们的行动。(C) 2009 Elsevier B.V.版权所有
When different interceptive skills are considered, humans tend not to pursuit track the approaching object along its entire trajectory to the point of interception. Previous research of cricket batsmen facing medium paced deliveries reported pursuit visual tracking of the ball for the first 100-150 ms of flight followed by a saccade to the predicted ball bounce location. The aim of this study was to examine eye movements of batsmen while facing a range of slow to medium pace delivery speeds. Thirteen sub-elite batsmen faced 36 deliveries from a ball machine in which the projection speed was randomly varied across a range of 17-25 ms(-1). The foveal gaze of the batsmen was recorded with a monocular eye movement registration system. Gaze strategies differed between participants in several ways, i.e., in the initial location of gaze prior to delivery (on the outlet of the ball machine or "parked" at a location on the predicted flight trajectory), the behavior immediately after ball release (pursuit tracking or saccade), and the behavior in mid-late flight (predictive saccade to the bounce point or "parafoveal" pursuit tracking). Across the range of delivery speeds used in the current study, it was possible to pursuit track the ball from release to bounce point but it was also possible to choose to make saccades along the trajectory. Depending on the spatio-temporal demands of the task and the intentions of the batsman a range of visual search strategies can be employed to support their actions. (C) 2009 Elsevier B.V. All rights reserved.