Keep your eyes on the ball: smooth pursuit eye movements enhance prediction of visual motion
Keep your eyes on the ball: smooth pursuit eye movements enhance prediction of visual motion
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DOI：
10.1152/jn.00344.2010
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发表时间：
2011-04-01
影响因子：
2.5
通讯作者：
Gegenfurtner, Karl R.
中科院分区：
文献类型：
--
作者：
Spering, Miriam;Schuetz, Alexander C.;Gegenfurtner, Karl R.
Spering M，Schutz AC，Braun DI，Gegenfurtner KR.保持你的眼睛在球上：平滑的追求眼球运动增强视觉运动的预测。J Neurophysiol 105：1756-1767，2011.首次发表于2011年2月2日; doi：10.1152/jn.00344.2010.-运动行为的成功往往取决于预测运动物体路径的能力。在这里，我们问跟踪一个视觉对象与平滑的追求眼球运动是否有助于预测其运动方向。我们开发了一个范例，“眼睛足球”，其中观察者必须跟踪或注视视觉目标（球），并判断它是否会击中或错过一个固定的垂直线段（目标）。球和球门短暂呈现100-500 ms，并在提示感知判断之前一起从屏幕上消失。在追逐条件下，球向球门移动;在注视条件下，球门向静止的球移动，导致在追逐和注视期间类似的视网膜刺激。我们还测试了目标固定和球移动的情况。运动方向的预测显着更好的追求比在固定试验，无论是否球或目标作为固定目标。在注视和追踪试验中，当眼球运动准确时，预测性能更好。性能也增加了较短的球球门距离和较长的演示持续时间。较长的弹道并不影响性能。在追踪过程中，输出复制信号可以提供额外的运动信息，从而在运动预测中产生优势。
Spering M, Schutz AC, Braun DI, Gegenfurtner KR. Keep your eyes on the ball: smooth pursuit eye movements enhance prediction of visual motion. J Neurophysiol 105: 1756-1767, 2011. First published February 2, 2011; doi:10.1152/jn.00344.2010.-Success of motor behavior often depends on the ability to predict the path of moving objects. Here we asked whether tracking a visual object with smooth pursuit eye movements helps to predict its motion direction. We developed a paradigm, "eye soccer," in which observers had to either track or fixate a visual target (ball) and judge whether it would have hit or missed a stationary vertical line segment (goal). Ball and goal were presented briefly for 100-500 ms and disappeared from the screen together before the perceptual judgment was prompted. In pursuit conditions, the ball moved towards the goal; in fixation conditions, the goal moved towards the stationary ball, resulting in similar retinal stimulation during pursuit and fixation. We also tested the condition in which the goal was fixated and the ball moved. Motion direction prediction was significantly better in pursuit than in fixation trials, regardless of whether ball or goal served as fixation target. In both fixation and pursuit trials, prediction performance was better when eye movements were accurate. Performance also increased with shorter ball-goal distance and longer presentation duration. A longer trajectory did not affect performance. During pursuit, an efference copy signal might provide additional motion information, leading to the advantage in motion prediction.