Effects of repetition suppression on sound induced flash illusion with aging
Effects of repetition suppression on sound induced flash illusion with aging
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重复抑制对声诱发闪光错觉随老化的影响
DOI：
10.3389/fpsyg.2020.00216
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发表时间：
2020
影响因子：
3.8
通讯作者：
Ming Zhang
中科院分区：
文献类型：
--
作者：
Yawen Sun;Xiaole Liu;Biqin Li;Clara Sava-Segal;Aijun Wang;Ming Zhang
声音诱发闪光错觉（SiFI）是一种典型的听觉主导的多感觉整合现象，在这种现象中，由于同时呈现不同数量的听觉蜂鸣声，观察者误解了视觉闪光的数量。尽管SiFI已被证明与感知敏感性相关，但迄今为止，关于它如何与衰老的敏感性相对应，尚无共识。本研究基于SiFI范式（Shams et al., 2000），在视听刺激出现之前加入重复的听觉刺激，研究重复抑制（RS）对SiFI随年龄增长的影响。重复听觉刺激包括一个或两个相同的听觉刺激连续出现两次，然后再进行视听刺激。通过比较老年人和年轻人的错觉，我们旨在探讨年龄对听觉刺激对SiFI的RS的影响。结果表明，两个年龄组均表现出SiFI效应，但两个年龄组的RS表现对融合幻觉和裂变幻觉的影响不同。老年人的错觉效应弱于年轻人。具体来说，RS只影响老年人的裂变幻觉，而同时影响年轻人的裂变幻觉和融合幻觉。因此，本研究表明，基于听觉RS的知觉敏感性降低可以削弱多感觉统合中的SiFI效应，老年人更容易发生RS，表明老年人在听觉RS下对SiFI效应的感知较弱。
The sound-induced flash illusion (SiFI) is a classical auditory-dominated multisensory integration phenomenon in which the observer misperceives the number of visual flashes due to the simultaneous presentation of a different number of auditory beeps. Although the SiFI has been documented to correlate with perceptual sensitivity, to date there is no consensus as to how it corresponds to sensitivity with aging. The present study was based on the SiFI paradigm (Shams et al., 2000), adding repeated auditory stimuli prior to the appearance of audiovisual stimuli to investigate the effects of repetition suppression (RS) on the SiFI with aging. The repeated auditory stimuli consisted of one or two of the same auditory stimuli presented twice in succession, which were then followed by the audiovisual stimuli. By comparing the illusions in old and young adults, we aimed to explore the influence of aging on the RS of auditory stimuli on the SiFI. The results showed that both age groups showed SiFI effects, however, the RS performance of the two age groups had different effects on the fusion and fission illusions. The illusion effect in old adults was weaker than in young adults. Specifically, RS only affected fission illusions in the old adults but both fission and fusion illusions in young adults. Thus, the present study indicated that the decreased perceptual sensitivity based on auditory RS could weaken the SiFI effect in multisensory integration and that old adults are more susceptible to RS, showing that old adults perceived the SiFI effect weakly under auditory RS.