Feng Jing, Spence Ian
Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Canada.
Exp Psychol. 2013;60(3):149-56. doi: 10.1027/1618-3169/a000182.
Although it may seem paradoxical, the unified-focus and multiple-foci theories of spatial selective attention are both well supported by experimental evidence. However, the apparent contradiction is illusory and the two competing views may be reconciled by a closer examination of the spatial mechanisms involved. We propose that the deployment of attention may be modeled as a mixture of individual distributions of attention and we tested this hypothesis in two experiments. Participants had to identify targets among distractors, with the targets presented at various distances from the cued locations. Experiment 1 confirmed that the distribution of attention may be described by a mixture of individual distributions, each centered at a cued location. Experiment 2 showed that cue separation is an important determinant of whether spatial attention is divided or not.
尽管看似矛盾，但空间选择性注意的统一焦点理论和多焦点理论都得到了实验证据的有力支持。然而，这种明显的矛盾是虚幻的，通过更仔细地研究其中涉及的空间机制，这两种相互竞争的观点可能会得到调和。我们提出，注意力的部署可以建模为注意力的个体分布的混合，并且我们在两个实验中对这一假设进行了测试。参与者必须在干扰项中识别目标，目标在距提示位置的不同距离处呈现。实验1证实，注意力的分布可以用个体分布的混合来描述，每个个体分布都以一个提示位置为中心。实验2表明，提示分离是空间注意力是否被分散的一个重要决定因素。
