Enhancement of visual perception by crossmodal visuo-auditory interaction
Enhancement of visual perception by crossmodal visuo-auditory interaction
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DOI：
10.1007/s00221-002-1262-y
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发表时间：
2002-12-01
影响因子：
2
通讯作者：
Làdavas, E
中科院分区：
文献类型：
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作者：
Frassinetti, F;Bolognini, N;Làdavas, E
神经生理学研究表明，动物突然的声音增强了对随后视觉刺激的感知处理。在本研究中，我们探讨了这种增强也存在于人类中的可能性，并可以通过跨模态整合效应来解释，即这种相互作用发生在双峰神经元的水平上。受试者被要求检测视觉刺激在一个单一的视觉条件或在跨模态视听条件。多感官刺激的空间和时间接近系统地变化。当视听刺激遵循一个相当明确的空间和时间规则时，发现亮度检测的感知灵敏度（d '）的增强，在神经元水平上控制多感觉整合。
Neurophysiological studies have shown in animals that a sudden sound enhanced perceptual processing of subsequent visual stimuli. In the present study, we explored the possibility that such enhancement also exists in humans and can be explained through crossmodal integration effects, whereby the interaction occurs at the level of bimodal neurons. Subjects were required to detect visual stimuli in a unimodal visual condition or in crossmodal audio-visual conditions. The spatial and the temporal proximity of multisensory stimuli were systematically varied. An enhancement of the perceptual sensitivity (d') for luminance detection was found when the audiovisual stimuli followed a rather clear spatial and temporal rule, governing multisensory integration at the neuronal level.