Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls
Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls
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DOI：
10.1037/0096-1523.25.2.531
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发表时间：
1999-04-01
影响因子：
2.1
通讯作者：
Davids, K
中科院分区：
文献类型：
--
作者：
Oudejans, RRD;Michaels, CF;Davids, K
为了接住一个飞出的球，接球手必须获得引导球运动到球将降落的位置的信息。球的仰角（AT）的切线加速度作为这一信息的可能来源已经得到了经验的支持。然而，很少有人提到如何检测信息。接球手是盯着一个固定的点，还是用目光跟踪球？实验1表明，接球手使用眼睛和头部的运动来跟踪球。这意味着，如果AT是视网膜拾取的，则必须通过背景运动来完成。或者，AT可以通过视网膜外机制，如前庭和本体感受系统获得。在实验2中，在双眼和单眼观察条件下，在黑暗中，也就是在没有视觉背景的情况下，捕捉者可靠地跑去拦截发光的By球。这表明光信息不能仅由视网膜机制检测到。
To catch a lofted ball, a catcher must pick up information that guides locomotion to where the ball will land. The acceleration of tangent of the elevation angle of the ball (AT) has received empirical support as a possible source of this information. Little, however, has been said about how the information is detected. Do catchers fixate on a stationary point, or do they track the ball with their gaze? Experiment 1 revealed that catchers use eye and head movements to track the ball. This means that if AT is picked up retinally, it must be done by means of background motion. Alternatively AT could be picked up by extraretinal mechanisms, such as the vestibular and proprioceptive systems. in Experiment 2, catchers reliably ran to intercept luminous By balls in the dark, that is, in absence of a visual background, under both binocular and monocular viewing conditions. This indicates that the optical information is not detected by a retinal mechanism alone.