The number of stimulus-onset asynchronies affects the perception of the sound-induced flash illusion in young and older adults

Show simple item record Chan, Jason S. Connolly, Shannon K. Setti, Annalisa 2019-11-18T14:59:03Z 2019-11-18T14:59:03Z 2018-01-01
dc.identifier.citation Chan, J. S., Connolly, S. K. and Setti, A. (2018) 'The Number of Stimulus-Onset Asynchronies Affects the Perception of the Sound-Induced Flash Illusion in Young and Older Adults', Multisensory Research, 31(3-4), pp. 175-190. doi: 10.1163/22134808-00002605 en
dc.identifier.volume 31 en
dc.identifier.issued 3-4 en
dc.identifier.startpage 175 en
dc.identifier.endpage 190 en
dc.identifier.issn 2213-4794
dc.identifier.doi 10.1163/22134808-00002605 en
dc.description.abstract The sound-induced flash illusion is a multisensory illusion occurring when one flash is presented with two beeps and perceived as two flashes. Younger individuals are largely susceptible to the illusion when the stimulus onset asynchrony between the first and the second beep falls within the temporal window of integration, but the susceptibility falls dramatically outside of this short temporal range. Older individuals, in particular older adults prone to falling and/or mild cognitive impairment, show an extended susceptibility to the illusion. This suggests that they have inefficient multisensory integration, particularly in the temporal domain. In the present study, we investigated the reliability of the illusion across younger and older people, guided by the hypothesis that the experimental context, i.e., exposure to a wider or smaller number of stimulus onset asynchronies, would modify the intra-personal susceptibility to the illusion at shorter asynchronies vs. longer asynchronies, likely due to the gathering of model evidence based on Bayesian inference. We tested 22 young adults and 29 older adults and verified these hypotheses. Both groups showed higher susceptibility to the illusion when exposed to a smaller range of asynchronies, but only for longer ones, not within the 100 ms window. We discuss the theoretical implications in terms of online perceptual learning and practical implications in terms of standardisation of the experimental context when attempting to find normative values. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Brill Academic Publishers en
dc.rights © 2018 Brill Academic Publishers en
dc.subject Sound-induced flash illusion en
dc.subject Temporal binding window en
dc.subject Older adults en
dc.title The number of stimulus-onset asynchronies affects the perception of the sound-induced flash illusion in young and older adults en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Jason Chan, Applied Psychology, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2019-11-18T14:51:12Z
dc.description.version Accepted Version en
dc.internal.rssid 499914172
dc.description.status Peer reviewed en
dc.identifier.journaltitle Multisensory Research en
dc.internal.copyrightchecked No
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.internal.IRISemailaddress en

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