Detecting motion changes is a fundamental prerequisite for solving tasks in sports and in everyday life. It is known that peripheral vision is used to detect these changes and that saccades impair detection performance. However, comparatively little is known about the role of smooth-pursuit eye-movements (SPEMs) during these tasks. Therefore, we compared peripheral motion-change detection during SPEM and fixation at eccentricities up to 18°, simulating the perceptual demands of real-life situations. Based on expert gaze behavior in sports, we predicted that motion detection should be better during fixation than SPEM. In a series of three experiments, we consistently found that detection rates and response times were impaired during SPEM compared to fixation, particularly at 18° eccentricity. With an invisible pursuit object and targets moving ahead rather than behind the pursued object, performance differences in response times declined, whereas differences in detection rates interestingly remained unmoved. We argue that retinal image motion and attentional demands are reasons for SPEM impairments.

中文翻译：

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通过周边视觉检测运动变化：固定性优于平滑追踪。

检测运动变化是解决运动和日常生活中任务的基本前提。众所周知，周围视觉被用来检测这些变化，并且扫视会损害检测性能。但是，在这些任务中，人们对平滑追求眼球运动（SPEM）的作用知之甚少。因此，我们比较了SPEM和固定在最大18°偏心率时的周边运动变化检测，从而模拟了现实生活中的感知需求。基于运动中的专家注视行为，我们预测固定过程中的运动检测应该比SPEM更好。在一系列的三个实验中，我们一致地发现，与固定相比，SPEM期间的检测率和响应时间受到了损害，尤其是在18°偏心率下。随着不可见的追踪对象和目标向前移动而不是在追踪对象之后，响应时间的性能差异有所减少，而有趣的是，检测率的差异仍然没有改变。我们认为视网膜图像运动和注意力需求是SPEM受损的原因。