December 2022
Volume 22, Issue 14
Open Access
Vision Sciences Society Annual Meeting Abstract  |   December 2022
Contribution of auditory distance cues to size constancy in perception and grasping when visual cues are compromised
Author Affiliations & Notes
  • Chao Zheng
    Center for the Study of Applied Psychology, Guangdong Key Laboratory of Mental Health and Cognitive Science, and the School of Psychology, South China Normal University, Guangzhou, Guangdong Province, 510631, China
  • Gexiu Wang
    Center for the Study of Applied Psychology, Guangdong Key Laboratory of Mental Health and Cognitive Science, and the School of Psychology, South China Normal University, Guangzhou, Guangdong Province, 510631, China
  • Juan Chen
    Center for the Study of Applied Psychology, Guangdong Key Laboratory of Mental Health and Cognitive Science, and the School of Psychology, South China Normal University, Guangzhou, Guangdong Province, 510631, China
    Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education
  • Footnotes
    Acknowledgements  This study was supported by two grants from the National Natural Science Foundation of China (31800908 and 31970981).
Journal of Vision December 2022, Vol.22, 3870. doi:https://doi.org/10.1167/jov.22.14.3870
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      Chao Zheng, Gexiu Wang, Juan Chen; Contribution of auditory distance cues to size constancy in perception and grasping when visual cues are compromised. Journal of Vision 2022;22(14):3870. https://doi.org/10.1167/jov.22.14.3870.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

People need to integrate information from multiple modalities to obtain precise information about object features and spatial relationships. An extreme case for multiple sensory integrations is that when information from one source is compromised, information from other sources would have a more significant weight in the integration to compensate for the loss. Although previous studies have shown that the weighting of sensory information depends on the reliability of that information, our previous study with visual and proprioceptive information indicates that the weighting also depends on the nature of the control system (visual perceptual or visuomotor systems) employed in the tasks. Here we tested whether or not this is also the case for visual-auditory integration. We tested size constancy in perception and grasping when there were ample visual (i.e., viewing binocularly in light), restricted visual (i.e., viewed monocularly through a 1 mm hole in entirely dark), and restricted visual but some auditory distance cues. In the ample-vision condition, participants showed size constancy in both tasks. In the restricted-vision condition, size constancy was disrupted in both tasks. Interestingly, when auditory distance cues were provided in this situation, only size constancy in perception, but not in grasping, was improved, suggesting that the visual perceptual system can better use auditory information than the visuomotor system. We then trained participants to use the auditory signal to discriminate distances in seven days and tested size constancy afterward. After training, participants’ performance in distance discrimination and the size constancy in grasping were all improved, suggesting that the more reliable a cue, the more significant contribution it is in sensory integration. Taken together, we provide additional evidence that both the nature of the control system, the tasks employed, and the reliability of the cue influence the weighting of cues in multisensory integration.

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