Lunau Rasmus, Olivers Christian N L
University of Copenhagen, Copenhagen, Denmark.
Atten Percept Psychophys. 2010 Feb;72(2):317-25. doi: 10.3758/APP.72.2.317.
The attentional blink (AB) refers to the finding that the perception of the second of two targets (T2) is impaired when presented in close temporal proximity to the first target (T1). An exception to this deficit occurs when T2 immediately follows T1, an effect referred to as lag 1 sparing. So far, it has been unclear whether the AB is location specific or nonspatial in nature. Most demonstrations of an AB across different locations have shown an absence of lag 1 sparing, due to accompanying spatial switch costs. This means that the AB pattern itself may be explained through such switch costs. In this study, to minimize spatial switch costs, attention was made to move continuously across multiple locations by aid of a cue. An AB across different locations was found, including lag 1 sparing. We conclude that the AB and lag 1 sparing are not tied to a location but represent a central deficit, in line with current theory.
注意瞬脱(AB)指的是这样一个发现:当两个目标中的第二个目标(T2)在时间上紧邻第一个目标(T1)呈现时,对T2的感知会受损。当T2紧接T1出现时,会出现这种缺陷的一个例外情况,这种效应被称为1毫秒延迟节省。到目前为止,尚不清楚注意瞬脱是位置特异性的还是非空间性的。大多数在不同位置的注意瞬脱演示都显示不存在1毫秒延迟节省,这是由于伴随的空间转换成本。这意味着注意瞬脱模式本身可能通过这种转换成本来解释。在本研究中,为了尽量减少空间转换成本,借助一个线索使注意力在多个位置上连续移动。发现了跨不同位置的注意瞬脱,包括1毫秒延迟节省。我们得出结论,注意瞬脱和1毫秒延迟节省并不局限于某个位置,而是代表一种中枢缺陷,这与当前理论一致。