Perception in Action Research Centre.
Department of Psychology.
J Exp Psychol Hum Percept Perform. 2021 Feb;47(2):172-188. doi: 10.1037/xhp0000881. Epub 2020 Nov 9.
One common way to investigate the relationship between eye movements and attention is to pair the cueing paradigm with a saccadic dual-task. Here eye movements are directed to one location in the visual field, while a spatial cue simultaneously directs attention to the same or a different location. The magnitude of the cueing effect is then compared between trials where gaze is maintained at fixation and trials where eye movements are prepared. As these comparisons typically occur across blocked single and dual-task conditions, it is difficult to address possible confounds due to changes in response caution. In this paper we use evidence accumulation modeling to remove this confound and extract a measure of orienting that can be used to quantify and compare the influence of spatial attention across four different manipulations of eye movements: 2 that require fixation and 2 that require saccade preparation. The results demonstrate that the magnitude of the cueing effect is similar regardless of eye movement condition or perceptual task. The perceptual benefit associated with preparing a saccade, in contrast, was found to vary by perceptual task. Taken together these results establish that spatial attention and saccade preparation are separable and, we suggest, mediated by distinct underlying mechanisms. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
一种研究眼球运动和注意力之间关系的常用方法是将提示范式与眼跳双重任务配对。在这种方法中，眼球运动被引导到视野中的一个位置，而空间提示同时将注意力引导到相同或不同的位置。然后，在注视保持在固定位置的试验和准备眼球运动的试验之间，比较提示效应的大小。由于在阻塞的单任务和双重任务条件下进行这些比较，因此很难解决由于反应谨慎性变化而产生的可能混杂因素。在本文中，我们使用证据积累模型来消除这种混杂因素，并提取一种可以用于量化和比较空间注意力在眼球运动的四种不同操作中的影响的定向度量：需要固定和需要眼跳准备的两种操作。结果表明，无论眼球运动条件或感知任务如何，提示效应的大小都是相似的。相比之下，与准备眼跳相关的感知益处因感知任务而异。这些结果表明，空间注意力和眼跳准备是可分离的，并且我们认为，它们是由不同的潜在机制介导的。
