Nothing is irrelevant in a noisy world: sensory illusions reveal obligatory within-and across-modality integration.
Nothing is irrelevant in a noisy world: sensory illusions reveal obligatory within-and across-modality integration.
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DOI：
10.1523/jneurosci.2495-12.2012
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发表时间：
2012-09-26
期刊：
影响因子：
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通讯作者：
Lee AK
中科院分区：
文献类型：
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作者：
Bizley JK;Shinn-Cunningham BG;Lee AK
在“闪光-哔哔错觉”中，当一个闪光与多个听觉哔哔声在时间上非常接近时，会被感知为多个闪光。这种错觉的解释认为，时间听觉信息干扰视觉信息，因为听觉的时间敏锐度比视觉更好。然而，也可能是，每当存在多个感官输入时，由待忽略的刺激对被关注的刺激引起的干扰取决于刺激被感知为来自单个远端源的可能性。在这里，我们探讨，在人类观察者，竞争的听觉和视觉输入之间的感知相互作用，而不同的空间接近度，这会影响对象的形成。当两个空间上分离的流呈现在相同的（视觉或听觉）模态，从一个方向的目标流的时间判断是有偏见的竞争干扰流的内容。跨模态，从目标和干扰源方向的听觉流偏见的感知数量的事件在一个目标的视觉流，然而，重要的是，从目标方向的听觉流影响视觉判断比听觉流从相反的hemifield。在最初的闪光-哔哔声错觉中，视觉流对听觉判断的影响很弱，与空间接近无关。我们还发现，知觉干扰的闪光-哔哔声错觉是类似的内通道干扰从竞争相同的通道流。结果显示，不完善的和强制性的内部和跨通道整合的信息，并暗示，这些相互作用的强度取决于对象绑定。
In the “flash-beep illusion,” a single light flash is perceived as multiple flashes when presented in close temporal proximity to multiple auditory beeps. Accounts of this illusion argue that temporal auditory information interferes with visual information because temporal acuity is better in audition than vision. However, it may also be that whenever there are multiple sensory inputs, the interference caused by a to-be-ignored stimulus on an attended stimulus depends on the likelihood that the stimuli are perceived as coming from a single distal source. Here we explore, in human observers, perceptual interactions between competing auditory and visual inputs while varying spatial proximity, which affects object formation. When two spatially separated streams are presented in the same (visual or auditory) modality, temporal judgments about a target stream from one direction are biased by the content of the competing distractor stream. Cross-modally, auditory streams from both target and distractor directions bias the perceived number of events in a target visual stream; however, importantly, the auditory stream from the target direction influences visual judgments more than does the auditory stream from the opposite hemifield. As in the original flash-beep illusion, visual streams weakly influence auditory judgements, regardless of spatial proximity. We also find that perceptual interference in the flash-beep illusion is similar to within-modality interference from a competing same-modality stream. Results reveal imperfect and obligatory within-and across-modality integration of information, and hint that the strength of these interactions depends on object binding.