Exposure to asynchronous audiovisual speech extends the temporal window for audiovisual integration
Exposure to asynchronous audiovisual speech extends the temporal window for audiovisual integration
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DOI：
10.1016/j.cogbrainres.2005.07.009
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发表时间：
2005-10-01
期刊：
影响因子：
--
通讯作者：
Spence, C
中科院分区：
文献类型：
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作者：
Navarra, J;Vatakis, A;Spence, C
我们研究了监测异步视听语音是否会导致听觉和视觉感官处理的一般时间重新校准。受试者观看一段录像，录像中有一个说话者念出一串单词（实验1和3），或者一只手在钢琴上演奏一种音乐模式（实验2）。听觉和视觉通道要么同步呈现，要么异步呈现（视觉信号领先听觉信号300 ms;实验1和2）。在执行监测任务时，要求参与者判断在会话期间以不同刺激起始时间（SOA）呈现的听觉（白色噪声突发）和视觉刺激（闪光）对的时间顺序。结果表明，在监测去干扰的语音或音乐时，参与者需要更长的听觉和视觉刺激之间的间隔，以正确地感知它们的时间顺序，这表明视听整合的时间窗口扩大。事实上，没有这样的重新校准发生时，我们使用了更长的时间间隔（1000毫秒），超过了视听整合的时间窗口（实验3）支持这一结论。(c)2005 Elsevier B. V.保留所有权利。
We examined whether monitoring asynchronous audiovisual speech induces a general temporal recalibration of auditory and visual sensory processing. Participants monitored a videotape featuring a speaker pronouncing a list of words (Experiments 1 and 3) or a hand playing a musical pattern on a piano (Experiment 2). The auditory and visual channels were either presented in synchrony, or else asynchronously (with the visual signal leading the auditory signal by 300 ms; Experiments 1 and 2). While performing the monitoring task, participants were asked to judge the temporal order of pairs of auditory (white noise bursts) and visual stimuli (flashes) that were presented at varying stimulus onset asynchronies (SOAs) during the session. The results showed that, while monitoring desynchronized speech or music, participants required a longer interval between the auditory and visual stimuli in order to perceive their temporal order correctly, suggesting a widening of the temporal window for audiovisual integration. The fact that no such recalibration occurred when we used a longer asynchrony (1000 ms) that exceeded the temporal window for audiovisual integration (Experiment 3) supports this conclusion. (c) 2005 Elsevier B.V. All rights reserved.