Visual crowding is unaffected by adaptation-induced spatial compression

Chambers, Alison L.; Roach, Neil W.; Johnston, Alan

Abstract

It has recently been shown that adapting to a densely textured stimulus alters the perception of visual space, such that the distance between two points subsequently presented in the adapted region appears reduced (Hisakata, Nishida, & Johnston, 2016). We asked whether this form of adaptation-induced spatial compression alters visual crowding. To address this question, we first adapted observers to a dynamic dot texture presented within an annular region surrounding the test location. Following adaptation, observers perceived a test array comprised of multiple oriented dot dipoles as spatially compressed, resulting in an overall reduction in perceived size. We then tested to what extent this spatial compression influences crowding by measuring orientation discrimination of a single dipole flanked by randomly oriented dipoles across a range of separations. Following adaptation, we found that the magnitude of crowding was predicted by the physical-rather than perceptual-separation between centre and flanking dipoles. These findings contrast with previous studies in which crowding has been shown to increase when motion-induced position shifts act to reduce apparent separation (Dakin, Greenwood, Carlson, & Bex, 2011; Maus, Fischer, & Whitney, 2011).

Citation

Chambers, A. L., Roach, N. W., & Johnston, A. (2018). Visual crowding is unaffected by adaptation-induced spatial compression. Journal of Vision, 18(3), Article 12. https://doi.org/10.1167/18.3.12

• Journal Article Type: Article
• Acceptance Date: Jan 16, 2018
• Publication Date: Mar 23, 2018
• Deposit Date: Mar 19, 2018
• Publicly Available Date: Mar 23, 2018
• Journal: Journal of Vision
• Electronic ISSN: 1534-7362
• Publisher: Association for Research in Vision and Ophthalmology
• Peer Reviewed: Peer Reviewed
• Volume: 18
• Issue: 3
• Article Number: 12
• DOI: https://doi.org/10.1167/18.3.12
• Public URL: https://nottingham-repository.worktribe.com/output/921416
• Publisher URL: http://jov.arvojournals.org/article.aspx?articleid=2675577
• Contract Date: Mar 19, 2018