Cross-modal cueing in audiovisual spatial attention
Cross-modal cueing in audiovisual spatial attention
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DOI：
10.3758/s13414-015-0920-7
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发表时间：
2015-10-01
影响因子：
1.7
通讯作者：
Gondan, Matthias
中科院分区：
文献类型：
--
作者：
Blurton, Steven P.;Greenlee, Mark W.;Gondan, Matthias
视觉处理在我们的注意力集中的位置是最有效的。长期以来，人们一直认为各种空间线索可以引导视觉空间注意并影响听觉目标的检测。跨通道提示，然而，似乎取决于视觉线索的类型：已报道的促进作用的内源性视觉线索，而外源性线索似乎大多是无效的。在三个实验中，我们研究了视听信号加工的线索效应。在实验1中，我们使用内源性线索，以探讨其对检测的听觉，视觉和视听的目标提出了发病的焦虑。一致的线索效应，发现在所有的目标条件。在实验2中，我们使用了外源性线索，发现线索效应只对视觉目标检测，而不是听觉目标检测。在实验3中，我们使用预测性外生线索来检验线索-目标偶然性对实验1和实验2之间差异的可能性。在所有的实验中，我们研究了反应时间模型是否可以解释数据，并测试了所观察到的线索效应是否依赖于模态。观察到的结果与内源性线索意味着，多感官信号的感知调制由一个单一的，超模态系统在一个自上而下的方式（实验1）。与此相反，自下而上的注意控制，如实验2的外源性线索任务中观察到的，主要是通过特定的模态子系统发挥其影响。实验3表明，这种显著的差异并不依赖于线索和目标之间的偶然性。
Visual processing is most effective at the location of our attentional focus. It has long been known that various spatial cues can direct visuospatial attention and influence the detection of auditory targets. Cross-modal cueing, however, seems to depend on the type of visual cue: facilitation effects have been reported for endogenous visual cues while exogenous cues seem to be mostly ineffective. In three experiments, we investigated cueing effects on the processing of audiovisual signals. In Experiment 1, we used endogenous cues to investigate their effect on the detection of auditory, visual, and audiovisual targets presented with onset asynchrony. Consistent cueing effects were found in all target conditions. In Experiment 2, we used exogenous cues and found cueing effects only for visual target detection, but not auditory target detection. In Experiment 3, we used predictive exogenous cues to examine the possibility that cue-target contingencies were responsible for the difference between Experiment 1 and 2. In all experiments, we investigated whether a response time model can explain the data and tested whether the observed cueing effects were modality-dependent. The results observed with endogenous cues imply that the perception of multisensory signals is modulated by a single, supramodal system operating in a top-down manner (Experiment 1). In contrast, bottom-up control of attention, as observed in the exogenous cueing task of Experiment 2, mainly exerts its influence through modality-specific subsystems. Experiment 3 showed that this striking difference does not depend on contingencies between cue and target.