Livesey Evan J, Harris Irina M
School of Psychology, University of Sydney, Sydney, 2006 New South Wales, Australia.
Atten Percept Psychophys. 2011 Oct;73(7):2104-23. doi: 10.3758/s13414-011-0177-8.
In a typical attentional blink (AB) experiment, recognition of the second of two serially presented targets is impaired if it occurs around 200-500 ms after the first. However, recognition for the second item is often intact if the two targets occur consecutively (lag-1 sparing). Recent theories of the AB have placed great emphasis on the presence of lag-1 sparing and protracted sparing effects, where accurate performance is seemingly maintained across three or more targets, provided that they are presented consecutively. Here, we show that the type of stimulus (objects vs. letters) used in rapid serial visual presentation streams has a significant effect on the extent of lag-1 sparing, without a commensurate influence on the AB. In addition, multiple consecutive targets produce strikingly different patterns of sparing for objects and letters. These findings suggest that the processes mediating lag-1 sparing are independent of those underlying the AB.
在典型的注意瞬脱（AB）实验中，如果两个相继呈现的目标中的第二个目标在第一个目标出现后约200 - 500毫秒出现，那么对它的识别就会受损。然而，如果两个目标连续出现（间隔为1的保留），对第二个目标的识别通常是完整的。近期关于注意瞬脱的理论非常强调间隔为1的保留和持续的保留效应的存在，即在三个或更多目标连续呈现的情况下，似乎能保持准确的表现。在这里，我们表明，快速序列视觉呈现流中使用的刺激类型（物体与字母）对间隔为1的保留程度有显著影响，而对注意瞬脱没有相应影响。此外，多个连续目标对物体和字母产生的保留模式截然不同。这些发现表明，介导间隔为1的保留的过程与注意瞬脱背后的过程是相互独立的。
