Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
Atten Percept Psychophys. 2022 Aug;84(6):2040-2050. doi: 10.3758/s13414-022-02537-9. Epub 2022 Jul 18.
Sound-induced flash illusion (SiFI) refers to an auditory dominance effect in which observers misperceive the number of visual flashes due to the simultaneous presentation of a different number of auditory beeps. Although the SiFI remains robust despite many factors, little is known about how the dominance of audition over vision changes as a function of spatial location in 3D space and how this corresponds with aging. In the present study, we recruited younger (18-26 years old) and older adults (60-76 years old) and presented visual stimuli in near space and auditory stimuli in far space (Vnear_Afar) or visual stimuli in far space and auditory stimuli in near space (Vfar_Anear), with the aim of exploring the effect of aging on spatial dominance in SiFI. The results showed that both participant groups exhibited a SiFI auditory dominance effect; however, older adults were more susceptible to illusions than younger adults. More importantly, for younger adults, when auditory stimuli were presented in far space, the accuracy and d' indicated that SiFI was significantly enhanced in the fission illusion, and the reaction time (RT) results showed that RT became longer in the fusion illusion. However, for older adults, the SiFI was not affected by the spatial location. Therefore, the present results reveal for the first time that the SiFI effect is modulated by the depth of auditory stimuli. Moreover, older adults were not susceptible to the depth dimension, thus showing age-related sensory decline and specifically showing a decreased ability to localize visual and auditory stimuli.
声诱闪光错觉（SiFI）是一种听觉优势效应，即观察者由于同时呈现不同数量的听觉哔哔声而错误地感知视觉闪光的数量。尽管 SiFI 受到许多因素的影响仍然很稳定，但对于听觉对视觉的优势如何随 3D 空间中的空间位置而变化以及这种变化如何与年龄相关知之甚少。在本研究中，我们招募了年轻（18-26 岁）和年长（60-76 岁）成年人，并在近空间呈现视觉刺激，在远空间呈现听觉刺激（Vnear_Afar）或在远空间呈现视觉刺激，在近空间呈现听觉刺激（Vfar_Anear），旨在探索年龄对 SiFI 中空间优势的影响。结果表明，两个参与者群体都表现出 SiFI 听觉优势效应；然而，年长组比年轻组更容易产生错觉。更重要的是，对于年轻成年人，当听觉刺激在远空间呈现时，准确性和 d'表明在裂变错觉中 SiFI 显著增强，反应时间（RT）结果表明在融合错觉中 RT 变长。然而，对于年长成年人，SiFI 不受空间位置的影响。因此，本研究结果首次揭示了 SiFI 效应受听觉刺激深度的调节。此外，年长成年人不易受到深度维度的影响，因此表现出与年龄相关的感官下降，特别是表现出定位视觉和听觉刺激的能力下降。
