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将目光从移动的目标上移开并不会干扰朝向目标运动的引导方式。

Looking away from a moving target does not disrupt the way in which the movement toward the target is guided.

机构信息

,.

, Vrije Universiteit Amsterdam,.

出版信息

J Vis. 2020 May 11;20(5):5. doi: 10.1167/jov.20.5.5.

Abstract

People usually follow a moving object with their gaze if they intend to interact with it. What would happen if they did not? We recorded eye and finger movements while participants moved a cursor toward a moving target. An unpredictable delay in updating the position of the cursor on the basis of that of the invisible finger made it essential to use visual information to guide the finger's ongoing movement. Decreasing the contrast between the cursor and the background from trial to trial made it difficult to see the cursor without looking at it. In separate experiments, either participants were free to hit the target anywhere along its trajectory or they had to move along a specified path. In the two experiments, participants tracked the cursor rather than the target with their gaze on 13% and 32% of the trials, respectively. They hit fewer targets when the contrast was low or a path was imposed. Not looking at the target did not disrupt the visual guidance that was required to deal with the delays that we imposed. Our results suggest that peripheral vision can be used to guide one item to another, irrespective of which item one is looking at.

摘要

如果人们不打算与移动的物体进行互动,他们通常会用目光追随它。如果不这样做会怎样呢?我们记录了参与者将光标移动到移动目标时的眼睛和手指动作。由于不可预测的光标位置更新延迟,使得基于看不见的手指位置更新光标位置变得至关重要,这需要利用视觉信息来引导手指的持续运动。在试验中逐渐降低光标和背景之间的对比度,使得在不看它的情况下很难看到光标。在单独的实验中,要么参与者可以自由地在目标的整个轨迹上的任何地方击中目标,要么他们必须沿着指定的路径移动。在这两个实验中,参与者分别有 13%和 32%的试验用目光跟踪光标而不是目标。当对比度较低或施加路径时,他们击中的目标较少。不看目标并不会破坏我们施加的延迟所需的视觉引导。我们的结果表明,无论人们正在看哪个物体,外围视觉都可以用于将一个物体引导到另一个物体。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6fbb/7409596/c0ed7d65d4d9/jovi-20-5-5-f001.jpg

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