Donovan Christa-Lynn, Lindsay D Stephen, Kingstone Alan
University of British Columbia, Canada.
Brain Cogn. 2004 Oct;56(1):1-4. doi: 10.1016/j.bandc.2004.02.019.
Participants judged whether two sequential visual events were presented for the same length of time or for different lengths of time, while ignoring two irrelevant sequential sounds. Sounds could be either the same or different in terms of their duration or their pitch. When the visual stimuli were in conflict with the sound stimuli (e.g., visual events were the same, but the sounds were different) performance declined. This was true whether sounds varied in duration or in pitch. The influence of sounds was eliminated when visual duration discriminations were made easier. Together these results demonstrate that resolutions to crossmodal conflicts are flexible across the neural and cognitive architectures. More importantly, they suggest that interactions between modalities can span to abstract levels of same/different representations.
参与者判断两个连续的视觉事件呈现的时间是否相同或不同，同时忽略两个不相关的连续声音。声音在持续时间或音高方面可以相同或不同。当视觉刺激与声音刺激冲突时（例如，视觉事件相同，但声音不同），表现会下降。无论声音在持续时间还是音高上有所变化，都是如此。当视觉持续时间辨别变得更容易时，声音的影响就会消除。这些结果共同表明，跨模态冲突的解决在神经和认知结构中是灵活的。更重要的是，它们表明模态之间的相互作用可以跨越到相同/不同表征的抽象层面。
