ArticleVision (Basel, Switzerland)2021
Does Vergence Affect Perceived Size?
Article in Vision (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- A Bayesian model of distance perception from ocular convergence.PLoS computational biology · 2025Article
- Contribution of auditory distance cues to size constancy in perception and grasping in restricted viewing.iScience · 2025Article
- Empirical validation of QUEST+ in PSE and JND estimations in visual discrimination tasks.Behavior research methods · 2023Article
- Minimal theory of 3D vision: new approach to visual scale and visual shape.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023Review
- The Riemannian Geometry Theory of Visually-Guided Movement Accounts for Afterimage Illusions and Size Constancy.Vision (Basel, Switzerland) · 2022Article
- Developmental Trajectories of Size Constancy as Implicitly Examined by Simple Reaction Times.Vision (Basel, Switzerland) · 2021Article
- V1 as an egocentric cognitive map.Neuroscience of consciousness · 2021Article
- Article
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Authors and funding
1 author.
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Abstract
Since Kepler (1604) and Descartes (1637), it has been suggested that 'vergence' (the angular rotation of the eyes) plays a key role in size constancy. However, this has never been tested divorced from confounding cues such as changes in the retinal image. In our experiment, participants viewed a target which grew or shrank in size over 5 s. At the same time, the fixation distance specified by vergence was reduced from 50 to 25 cm. The question was whether this change in vergence affected the participants' judgements of whether the target grew or shrank in size? We found no evidence of any effect, and therefore no evidence that eye movements affect perceived size. If this is correct, then our finding has three implications. First, perceived size is much more reliant on cognitive influences than previously thought. This is consistent with the argument that visual scale is purely cognitive in nature (Linton, 2017; 2018). Second, it leads us to question whether the vergence modulation of V1 contributes to size constancy. Third, given the interaction between vergence, proprioception, and the retinal image in the Taylor illusion, it leads us to ask whether this cognitive approach could also be applied to multisensory integration.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.