An irrelevant light enhances auditory detection in humans: a psychophysical analysis of multisensory integration in stimulus detection
An irrelevant light enhances auditory detection in humans: a psychophysical analysis of multisensory integration in stimulus detection
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DOI：
10.1016/s0926-6410(03)00160-5
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发表时间：
2003-07-01
期刊：
影响因子：
--
通讯作者：
Wallace, MT
中科院分区：
文献类型：
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作者：
Lovelace, CT;Stein, BE;Wallace, MT
在动物模型中进行的生理和行为研究表明，来自不同感官的信息可以协同使用，以增强对物体和事件的检测。虽然存在大量的证据表明，在人类行为和感知的多感官线索的协同使用，有相互矛盾的证据，这种相互作用是否可以用来帮助刺激检测。为了研究这个问题，我们让志愿者在一个间隔的信号检测任务中指示是否存在短暂的低强度声音，该声音要么单独出现，要么与同时出现的光配对。在第一个实验中，发现与任务无关的光增强了声音的可检测性，但也增加了受试者报告声音存在的意愿（即，响应偏差）。在第二个实验中，旨在消除这种反应偏差，我们发现在没有任何变化的情况下，刺激的可检测性的改善偏置。这些研究结果表明，在人类受试者的刺激检测中存在显着的多感官介导的增益。(C)2003 Elsevier B.V.保留所有权利。
Physiological and behavioral studies in animal models have revealed that information from the different senses can be used synergistically to enhance the detection of objects and events. Although a great deal of evidence exists which demonstrates the synergistic use of multisensory cues in human behavior and perception, there is conflicting evidence about whether such interactions can be used to aid in stimulus detection. To examine this issue, we had volunteers indicate the presence or absence of a brief, low-intensity sound that was either presented alone or paired with a simultaneous light in a one-interval signal detection task. In the first experiment, the task-irrelevant light was found to enhance the detectability of the sound, but also to increase the subject's willingness to report the presence of a sound (i.e., response bias). In the second experiment, designed to eliminate this response bias, we found an improvement in stimulus detectability in the absence of any change in bias. These findings demonstrate the presence of a significant multisensory-mediated gain in stimulus detection in human subjects. (C) 2003 Elsevier B.V. All rights reserved.