Performing a task jointly enhances the sound-induced flash illusion
Performing a task jointly enhances the sound-induced flash illusion
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DOI：
10.1177/1747021820942687
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发表时间：
2020-01
影响因子：
1.7
通讯作者：
Basil Wahn;Tim Rohe;Anika Gearhart;A. Kingstone;S. Sinnett
中科院分区：
文献类型：
--
作者：
Basil Wahn;Tim Rohe;Anika Gearhart;A. Kingstone;S. Sinnett
我们的感官不断受到刺激。通过多感觉整合，不同的感觉输入可能会也可能不会被组合成一个单一的知觉。在这种刺激的同时，人们经常参与社会互动，但多感觉整合和社会加工如何相互作用在很大程度上是未知的。本研究调查了多感官声音诱导的闪光错觉是否以及如何受到社会操纵的影响。在声音诱导的闪光错觉中，参与者通常会收到一个视觉闪光和两个听觉嘟嘟声，她或他被要求指出所感知的闪光次数。通常，听觉嘟嘟声会改变对闪光的感知，因此参与者往往会感觉到两次闪光，而不是一次闪光。我们测试了与伙伴(同盟者)一起执行闪光计数任务是否会调节这种错觉，该伙伴被要求指出出现的嘟嘟声的数量。我们发现，与单独执行闪光计数任务相比，与邦联成员一起执行闪光计数任务时，声音诱导的闪光错觉被感知的频率明显更高。然而，如果两个人之间的视觉接触被阻止，我们就不再发现这种影响。这些发现与之前的结果相结合，表明联合执行多感觉任务--在这种情况下是视听任务--降低了个人对视觉信息的关注程度，这反过来又影响了多感觉整合过程。
Our senses are stimulated continuously. Through multisensory integration, different sensory inputs may or may not be combined into a unitary percept. Simultaneous with this stimulation, people are frequently engaged in social interactions, but how multisensory integration and social processing interact is largely unknown. The present study investigated if, and how, the multisensory sound-induced flash illusion is affected by a social manipulation. In the sound-induced flash illusion, a participant typically receives one visual flash and two auditory beeps and she or he is required to indicate the number of flashes that were perceived. Often, the auditory beeps alter the perception of the flashes such that a participant tends to perceive two flashes instead of one flash. We tested whether performing a flash counting task with a partner (confederate), who was required to indicate the number of presented beeps, would modulate this illusion. We found that the sound-induced flash illusion was perceived significantly more often when the flash counting task was performed with the confederate compared with performing it alone. Yet, we no longer find this effect if visual access between the two individuals is prevented. These findings, combined with previous results, suggest that performing a multisensory task jointly—in this case an audiovisual task—lowers the extent to which an individual attends to visual information, which in turn affects the multisensory integration process.