Aging, Spatial Disparity, and the Sound-Induced Flash Illusion.
Aging, Spatial Disparity, and the Sound-Induced Flash Illusion.
复制标题
DOI：
10.1371/journal.pone.0143773
复制
发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Andersen GJ
中科院分区：
文献类型：
--
作者：
DeLoss DJ;Andersen GJ
本研究探讨了年龄相关的差异，多感觉整合和空间差异的影响，声音引起的闪光错觉-错觉在以前的研究中使用，以评估年龄相关的差异，多感觉整合。在参与研究之前，年轻和年长的参与者都表现出检测1-2次视觉闪光和1-2次听觉蜂鸣的能力。在通过预测试后，参与者被呈现1-2次闪光，伴随着0-2次蜂鸣声，这些蜂鸣声来自距离参与者100 cm等距离放置的五个扬声器之一。一个扬声器位于屏幕正下方，两个扬声器位于屏幕中心左右50 cm处，另外两个扬声器位于屏幕中心左右100 cm处。参与者被告知报告出现的闪光次数并忽略蜂鸣声。两个年龄组都显示出哔哔声对闪光次数的显著影响。然而，无论是年轻人还是老年人都没有表现出任何显着的影响，空间差异的声音引起的闪光错觉。相同数量的蜂鸣声的存在增加了老年人和年轻人的准确性。还分析了反应时间数据。正如预期的那样，与年轻人相比，老年人的反应时间显着延长。此外，老年人和年轻人的反应时间显着增加融合试验，其中两个闪光和一个哔哔声被视为一个单一的闪光，相比一致的单一闪光试验。反应时间的增加在裂变试验中没有发现，在裂变试验中，一次闪光和两次蜂鸣被认为是两次闪光。这表明，与融合幻相相比，核裂变的两种形式的加工过程可能有所不同。
The present study examined age-related differences in multisensory integration and the effect of spatial disparity on the sound-induced flash illusion—-an illusion used in previous research to assess age-related differences in multisensory integration. Prior to participation in the study, both younger and older participants demonstrated their ability to detect 1–2 visual flashes and 1–2 auditory beep presented unimodally. After passing the pre-test, participants were then presented 1–2 flashes paired with 0–2 beeps that originated from one of five speakers positioned equidistantly 100cm from the participant. One speaker was positioned directly below the screen, two speakers were positioned 50cm to the left and right from the center of the screen, and two more speakers positioned to the left and right 100cm from the center of the screen. Participants were told to report the number of flashes presented and to ignore the beeps. Both age groups showed a significant effect of the beeps on the perceived number of flashes. However, neither younger nor older individuals showed any significant effect of spatial disparity on the sound-induced flash illusion. The presence of a congruent number of beeps increased accuracy for both older and younger individuals. Reaction time data was also analyzed. As expected, older individuals showed significantly longer reaction times when compared to younger individuals. In addition, both older and younger individuals showed a significant increase in reaction time for fusion trials, where two flashes and one beep are perceived as a single flash, as compared to congruent single flash trials. This increase in reaction time was not found for fission trials, where one flash and two beeps were perceived as two flashes. This suggests that processing may differ for the two forms for fission as compared to fusion illusions.