McIntosh Robert D, Buonocore Antimo
Human Cognitive Neuroscience, University of Edinburgh, Edinburgh, UK.
Center for Mind/Brain Sciences, University of Trento, Trento, Italy.
J Vis. 2014 May 30;14(5):15. doi: 10.1167/14.5.15.
We have suggested that the remote distractor effect (RDE), the elevation of average saccadic reaction time (SRT) induced by a task-irrelevant distractor, may be explained as a statistical consequence of a characteristic reshaping of the SRT distribution known as saccadic inhibition (SI; Buonocore & McIntosh, 2008). In a recent paper, Walker and Benson (2013) argue against this idea and claim that the RDE and SI are partly dissociable. Here, we examine this claim, taking the opportunity to clarify potential ambiguities about how SI affects average SRT, and how the presence of SI can be inferred from SRT distributions.We highlight what we consider to be the most interesting aspects of Walker and Benson’s data, and suggest that a more flexible and nuanced view of SI can account for them. In considering the relation between SI and the RDE, we conclude that the RDE may no longer be a useful concept for eye movement researchers.
我们曾提出,远程干扰效应(RDE),即由与任务无关的干扰物引起的平均扫视反应时间(SRT)的升高,可能被解释为一种被称为扫视抑制(SI;Buonocore & McIntosh,2008)的SRT分布特征重塑的统计结果。在最近一篇论文中,Walker和Benson(2013)反对这一观点,并声称RDE和SI在一定程度上是可分离的。在此,我们审视这一说法,借此机会澄清关于SI如何影响平均SRT以及如何从SRT分布中推断SI存在的潜在模糊之处。我们强调了我们认为Walker和Benson数据中最有趣的方面,并表明对SI采取更灵活、细致入微的观点可以解释这些数据。在考虑SI与RDE之间的关系时我们得出结论,RDE可能对眼动研究人员而言不再是一个有用的概念。