This study investigated effects of divided attention on the temporal processes of perception. During continuous watch periods, observers responded to sudden changes in the color or direction of any one of a set of moving objects. The set size of moving objects was a primary variable. A simple detection task required responses to any display change, and a selective task required responses to a subset of the changes. Detection rates at successive points in time were measured by response time (RT) hazard functions.The principal finding was that increasing the set size divided the detection rates—and these divisive effects were essentially constant over time and over the time-varying influence of the target signals and response tasks. The set size, visual target signal, and response task exerted mutually invariant influence on detection rates at given times, indicating independent joint contributions of parallel component processes. The lawful structure of these effects was measured by RT hazard functions but not by RTs as such. The results generalized the time-invariant divisive effects of set size on visual process rates found by Lappin, Morse, & Seiffert (Attention, Perception, & Psychophysics, 78, 2469–2493, 2016). These findings suggest that the rate of visual perception has a limiting channel capacity.

中文翻译：

---

视觉感知的有限通道容量：传播注意力会除以感知过程的速率。

这项研究调查了分散注意力对知觉的时间过程的影响。在连续观察期间，观察者对一组移动物体中任何一个物体的颜色或方向的突然变化做出了响应。移动对象的设置大小是主要变量。一个简单的检测任务需要对任何显示更改做出响应，而选择任务需要对这些更改的子集做出响应。通过响应时间（RT）危险函数来测量连续时间点的检出率。主要发现是，增加设定大小会除以检出率，并且这些分裂效应在一段时间内以及在随时间变化的影响下基本上是恒定的目标信号和响应任务。设定大小，视觉目标信号，响应任务在给定时间对检测率产生了互不影响的影响，表明并行组件过程的独立联合贡献。这些影响的合法结构是通过RT危害函数而不是RT来衡量的。结果概括了Lappin，Morse和Seiffert发现的设定大小对视觉过程速率的时不变分裂效应（注意力，知觉和心理物理学，78，2469-2493，2016）。这些发现表明视觉感知的速率具有有限的通道容量。