Perception and Action Research Centre, Macquarie University.
Department of Psychology, University of Tasmania.
J Exp Psychol Hum Percept Perform. 2020 Apr;46(4):416-433. doi: 10.1037/xhp0000723.
A typical way to investigate the relationship between spatial attention and the programming of an eye movement is with a dual-task. Here, participants simultaneously make an eye movement in 1 direction and discriminate a target at the same or a different location. Results of these tasks consistently find that performance is best at the goal of an upcoming eye movement. It is less clear, however, the extent to which spatial attention can shift independently of the programmed saccade. In this article, for the first time, we use an evidence accumulation model to examine this longstanding question. Specifically, across 2 studies, we quantify the relative contributions of spatial attention and saccade preparation in a perceptual dual-task. Our results establish that there is a unique and measurable effect of spatial attention away from the saccade goal, and, interestingly, that the relative magnitude of this effect varies by cue type. There is a larger influence of spatial attention when a peripheral rather than a central cue is employed. We suggest that these results support the claim that each form of orienting is mediated by a distinct underlying mechanism. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
一种研究空间注意与眼球运动编程之间关系的典型方法是采用双任务范式。在此范式中，被试同时向 1 个方向进行眼球运动，并辨别相同或不同位置的目标。这些任务的结果一致表明，在即将到来的眼球运动的目标位置上表现最佳。然而，空间注意在多大程度上可以独立于计划的眼跳而转移，这一点尚不清楚。在本文中，我们首次使用证据积累模型来检验这个长期存在的问题。具体来说，在 2 项研究中，我们量化了在感知性双任务中空间注意和眼跳准备的相对贡献。我们的结果表明，存在一种远离眼跳目标的独特且可测量的空间注意效应，有趣的是，这种效应的相对大小因提示类型而异。当使用外围而不是中央提示时，空间注意的影响更大。我们认为这些结果支持了这样一种观点，即每种定向形式都是由不同的潜在机制介导的。（PsycInfo 数据库记录（c）2020 APA，保留所有权利）。
