AI Article Synopsis
- The Sound-Induced Flash Illusion (SIFI) demonstrates how sound can distort visual perception, where one flash paired with two beeps is perceived as two flashes.
- A review of 20 years of research indicates that the SIFI arises from how our brain integrates information across different senses, involving neural interactions primarily in the visual cortex influenced by sound.
- The study suggests SIFI could be a valuable tool for exploring multisensory processing, but future research needs more consistency in methods and parameters to fully leverage its potential.
Article Abstract
In the Sound-Induced Flash Illusion (SIFI) sound dramatically alters visual perception, as presenting a single flash with two beeps results in the perception of two flashes. In this comprehensive review, we synthesise 20 years of research using the SIFI, from over 100 studies. We discuss the neural and computational principles governing this illusion and examine the influence of perceptual experience, development, ageing and clinical conditions. Convergent findings show that the SIFI results from optimal integration and probabilistic inference and directly reflects crossmodal interactions in the temporal domain. Its neural basis lies in early modulation of visual cortex by auditory and multisensory regions. The SIFI shows increasingly strong potential as an efficient tool for measuring multisensory processing. Greater harmonisation across studies is now required to maximise this potential. We therefore propose considerations for researchers relating to choice of stimulus parameters and signpost directions for future research.
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| http://dx.doi.org/10.1016/j.neubiorev.2020.09.006 | DOI Listing |
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