Multimodal integration of time.
Multimodal integration of time.
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时间的多模态整合
DOI：
10.1027/1618-3169/a000249
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发表时间：
2014
影响因子：
1.3
通讯作者：
Ulrich
中科院分区：
文献类型：
--
作者：
Bausenhart;De la Rosa;Ulrich
最近的研究表明，持续时间的歧视视觉呈现的时间间隔的准确性强烈受损，同时提出的听觉间隔不同的持续时间，但不是反之亦然。由于这些研究主要依赖于准确性的措施，目前还不清楚是否这种损害的结果，在感知持续时间的变化，或者更确切地说，从知觉灵敏度的下降。因此，我们评估了完整的心理功能，在持续时间歧视任务，以解开感知持续时间和敏感性的影响。具体来说，参与者比较了由视觉或听觉脉冲标记的两个空间隔。这些脉冲要么是单峰的，或伴随着任务无关的脉冲在各自的其他方式，定义冲突的时间间隔相同，更短，或更长的持续时间。参与者被指示只根据他们的时间判断的任务相关的方式。尽管有这样的指示，感知持续时间明显偏向于任务无关模态中标记的间隔的持续时间。这不仅被发现的歧视的视觉间隔，但也在较小程度上，歧视的听觉间隔。辨别灵敏度，然而，是相似的所有多模态条件之间，只有改善相比，呈现单峰视觉间隔。在第二个实验中，多感觉整合的证据，甚至发现时，任务无关的形式不包含任何持续时间的信息，从而排除不遵守注意分配作为我们的结果的基础。因此，我们的研究结果表明，视听整合的时间不一致的信号不损害歧视的敏感性，而是改变感知的持续时间，大概是通过一个时间的口技效果。
Recent studies suggest that the accuracy of duration discrimination for visually presented intervals is strongly impaired by concurrently presented auditory intervals of different duration, but not vice versa. Because these studies rely mostly on accuracy measures, it remains unclear whether this impairment results from changes in perceived duration or rather from a decrease in perceptual sensitivity. We therefore assessed complete psychometric functions in a duration discrimination task to disentangle effects on perceived duration and sensitivity. Specifically, participants compared two empty intervals marked by either visual or auditory pulses. These pulses were either presented unimodally, or accompanied by task-irrelevant pulses in the respective other modality, which defined conflicting intervals of identical, shorter, or longer duration. Participants were instructed to base their temporal judgments solely on the task-relevant modality. Despite this instruction, perceived duration was clearly biased toward the duration of the intervals marked in the task-irrelevant modality. This was not only found for the discrimination of visual intervals, but also, to a lesser extent, for the discrimination of auditory intervals. Discrimination sensitivity, however, was similar between all multimodal conditions, and only improved compared to the presentation of unimodal visual intervals. In a second experiment, evidence for multisensory integration was even found when the task-irrelevant modality did not contain any duration information, thus excluding noncompliant attention allocation as a basis of our results. Our results thus suggest that audiovisual integration of temporally discrepant signals does not impair discrimination sensitivity but rather alters perceived duration, presumably by means of a temporal ventriloquism effect.
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影响因子：
2
作者：
Bratzke, Daniel;Seifried, Tanja;Ulrich, Rolf
通讯作者：
Ulrich, Rolf
影响因子：
3.4
作者：
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通讯作者：
Grondin, Simon
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作者：
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通讯作者：
Driver J
影响因子：
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作者：
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通讯作者：
Yeh, Su-Ling
影响因子：
--
作者：
Brainard, DH
通讯作者：
Brainard, DH