EPISODIC THEORY OF THE DYNAMICS OF SPATIAL ATTENTION
EPISODIC THEORY OF THE DYNAMICS OF SPATIAL ATTENTION
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DOI：
10.1037/0033-295x.102.3.503
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发表时间：
1995-07-01
影响因子：
5.4
通讯作者：
WEICHSELGARTNER, E
中科院分区：
文献类型：
--
作者：
SPERLING, G;WEICHSELGARTNER, E
本文重新分析了以往在简单反应时、选择反应时和复杂辨别实验中对视觉注意力的测量，在这些实验中，注意力被认为是在空间中连续移动的。这些数据和来自注意门控实验的数据由空间注意的情景（量子）理论定量预测，该理论提出：（1）视觉注意可以分解为一系列离散的注意行为（情节），（2）每个注意情节i由其空间注意函数f（i）（x，y）定义，（3）事件之间在时间t（o）的平滑过渡由时间过渡函数G（t-t（o））描述，以及（4）f和G是时空可分的。在新的实验中，使用并发运动反应时间任务来控制nonattentional因素，注意力转移的持续时间被证明是独立的距离穿越和存在的插入视觉障碍。
Previous measurements of visual attention in simple reaction time, choice reaction time and complex discrimination experiments in which attention was purported to move continuously across space are reanalyzed. These data and data from attention gating experiments are quantitatively predicted by an episodic (quantal) theory of spatial attention that proposes instead: (1) visual attention can be resolved into a sequence of discrete attentional acts (episodes), (2) each attentional episode i is defined by its spatial attention function f(i)(x,y), (3) the smooth transition at time t(o) between episodes is described by a temporal transition function G(t - t(o)), and (4) f and G are space-time separable. In new experiments, which use a concurrent motor reaction time task to control for nonattentional factors, the duration of an attention transition is shown to be independent of the distance traversed and of the presence of interposed visual obstacles.