Every time we make a saccade we form a prediction about where objects are going to be when the eye lands. This is crucial since the oculomotor system is retinotopically organized and every saccade drastically changes the projection of objects on the retina. We investigated how quickly the oculomotor system accommodates new spatial information when a distractor is displaced during a saccade. Participants performed sequences of horizontal and vertical saccades and oculomotor competition was induced by presenting a task-irrelevant distractor before the first saccade. On half of the trials the distractor remained in the same location after the first saccade and on the other half the distractor moved during the first saccade. Curvature of the second saccade was used to track target-distractor competition. At short intersaccadic intervals, saccades curved away from the original distractor location, confirming that in the oculomotor system spatiotopic representations emerge rapidly and automatically. Approximately 190 ms after the first saccade, second saccades curved away from the new distractor location. These results show that after a saccade the oculomotor system is initially driven by the spatial prediction made before the saccade, but it is able to quickly update these spatial predictions based on new visual information.

中文翻译：

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扫视过程中的干扰物位移反映在扫视曲率的时间过程中。

每次进行扫视时，我们都会预测眼睛降落时物体的位置。这是至关重要的，因为动眼系统是视网膜组织的，每个扫视都极大地改变了物体在视网膜上的投影。我们研究了在扫视运动中牵开器移位时动眼系统如何迅速容纳新的空间信息。参与者进行了水平和垂直扫视的序列，并在第一个扫视之前提出了与任务无关的干扰器，从而引起了眼动竞赛。在一半的试验中，牵张器在第一次扫视后仍留在同一位置，另一半在第一次扫视期间，牵开器移动了。第二扫视的曲率用于跟踪目标干扰因素的竞争。在短间隔内，扫视镜偏离原始的牵开器位置弯曲，这证实在动眼系统中，时空表征迅速而自动地出现。在第一个扫视后大约190毫秒，第二个扫视从新的牵开器位置弯曲离开。这些结果表明，在扫视之后，动眼系统最初是由扫视之前进行的空间预测驱动的，但是它能够基于新的视觉信息快速更新这些空间预测。