Turatto Massimo, Galfano Giovanni, Bridgeman Bruce, Umiltà Carlo
University of Trento, Rovereto, Italy.
Exp Brain Res. 2004 Apr;155(3):301-10. doi: 10.1007/s00221-003-1724-x. Epub 2003 Dec 5.
Extending previous evidence for attentional shifts across auditory and visual modalities without the confound of the two modalities originating at different locations (Turatto et al. 2002), we investigated attention shifts between auditory and tactile modalities, and between tactile and visual modalities. Two stimuli (S1 and S2), either in the same or in different modalities, were delivered from the same spatial source and were separated by a variable temporal gap. S1 was task irrelevant, whereas S2 required a speeded discrimination. Results showed that modality switching is detrimental independently of the stimulated modality as long as the temporal lag between S1 and S2 is short enough that there is not time to switch attention before S2 is delivered. We observed automatic, modality-driven, attentional capture, with ipsimodal trials leading to faster response times than crossmodal trials. The present results cannot be accounted for by spatial artifacts, response priming or criterion shifts, and are interpreted as the consequence of a space-independent attentional shift across sensory modalities.
扩展先前关于跨听觉和视觉模态注意力转移的证据（不存在两种模态源自不同位置的混淆因素，Turatto等人，2002年），我们研究了听觉和触觉模态之间以及触觉和视觉模态之间的注意力转移。两个刺激（S1和S2），要么处于相同模态，要么处于不同模态，从同一空间源发出，并由可变的时间间隔隔开。S1与任务无关，而S2需要快速辨别。结果表明，只要S1和S2之间的时间间隔足够短，以至于在S2呈现之前没有时间转移注意力，模态切换就是有害的，且与所刺激的模态无关。我们观察到了自动的、模态驱动的注意力捕捉，同模态试验比跨模态试验导致更快的反应时间。目前的结果不能用空间伪迹、反应启动或标准转移来解释，并且被解释为跨感觉模态的与空间无关的注意力转移的结果。
