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跨通道Oddball任务中声音新奇性引起分心的认知位点。

The cognitive locus of distraction by acoustic novelty in the cross-modal oddball task.

作者信息

Parmentier Fabrice B R, Elford Gregory, Escera Carles, Andrés Pilar, San Miguel Iria

机构信息

School of Psychology, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK.

出版信息

Cognition. 2008 Jan;106(1):408-32. doi: 10.1016/j.cognition.2007.03.008. Epub 2007 Apr 18.

Abstract

Unexpected stimuli are often able to distract us away from a task at hand. The present study seeks to explore some of the mechanisms underpinning this phenomenon. Studies of involuntary attention capture using the oddball task have repeatedly shown that infrequent auditory changes in a series of otherwise repeating sounds trigger an automatic response to the novel or deviant stimulus. This attention capture has been shown to disrupt participants' behavioral performance in a primary task, even when distractors and targets are asynchronous and presented in distinct sensory modalities. This distraction effect is generally considered as a by-product of the capture of attention by the novel or deviant stimulus, but the exact cognitive locus of this effect and the interplay between attention capture and target processing has remained relatively ignored. The present study reports three behavioral experiments using a cross-modal oddball task to examine whether the distraction triggered by auditory novelty affects the processing of the target stimuli. Our results showed that variations in the demands placed on the visual analysis (Experiment 1) or categorical processing of the target (Experiment 2) did not impact on distraction. Instead, the cancellation of distraction by the presentation of an irrelevant visual stimulus presented immediately before the visual target (Experiment 3) suggested that distraction originated in the shifts of attention occurring between attention capture and the onset of the target processing. Possible accounts of these shifts are discussed.

摘要

意外刺激往往会使我们从手头的任务中分心。本研究旨在探索这一现象背后的一些机制。使用奇偶数任务对非自愿注意捕获进行的研究反复表明,在一系列重复声音中,偶尔出现的听觉变化会触发对新奇或异常刺激的自动反应。这种注意捕获已被证明会干扰参与者在主要任务中的行为表现,即使干扰物和目标是异步呈现且处于不同的感觉模态。这种干扰效应通常被认为是新奇或异常刺激捕获注意的副产品,但这种效应的确切认知位点以及注意捕获与目标处理之间的相互作用仍相对被忽视。本研究报告了三项行为实验,使用跨模态奇偶数任务来检验由听觉新奇性引发的干扰是否会影响目标刺激的处理。我们的结果表明,对视觉分析(实验1)或目标的分类处理(实验2)的要求变化不会影响干扰。相反,在视觉目标之前立即呈现无关视觉刺激从而消除干扰(实验3)表明,干扰源于在注意捕获和目标处理开始之间发生的注意转移。我们讨论了这些转移的可能原因。

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