Luminance gradient at object borders communicates object location to the human oculomotor system

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dc.contributor.author Kilpeläinen, Markku
dc.contributor.author Georgeson, Mark A.
dc.date.accessioned 2018-07-27T21:22:38Z
dc.date.available 2018-07-27T21:22:38Z
dc.date.issued 2018-01-25
dc.identifier.citation Kilpeläinen , M & Georgeson , M A 2018 , ' Luminance gradient at object borders communicates object location to the human oculomotor system ' , Scientific Reports , vol. 8 , no. 1 , 1593 . https://doi.org/10.1038/s41598-018-19464-1
dc.identifier.other PURE: 97639068
dc.identifier.other PURE UUID: 1de84a9b-f6aa-4e4f-9e89-104334991ec4
dc.identifier.other RIS: urn:DDE0D234DE178A0B77390753812EC0DA
dc.identifier.other Scopus: 85041048712
dc.identifier.other WOS: 000423422700012
dc.identifier.other ORCID: /0000-0002-4112-7548/work/46835373
dc.identifier.uri http://hdl.handle.net/10138/237262
dc.description.abstract The locations of objects in our environment constitute arguably the most important piece of information our visual system must convey to facilitate successful visually guided behaviour. However, the relevant objects are usually not point-like and do not have one unique location attribute. Relatively little is known about how the visual system represents the location of such large objects as visual processing is, both on neural and perceptual level, highly edge dominated. In this study, human observers made saccades to the centres of luminance defined squares (width 4 deg), which appeared at random locations (8 deg eccentricity). The phase structure of the square was manipulated such that the points of maximum luminance gradient at the square’s edges shifted from trial to trial. The average saccade endpoints of all subjects followed those shifts in remarkable quantitative agreement. Further experiments showed that the shifts were caused by the edge manipulations, not by changes in luminance structure near the centre of the square or outside the square. We conclude that the human visual system programs saccades to large luminance defined square objects based on edge locations derived from the points of maximum luminance gradients at the square’s edges. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Scientific Reports
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 3112 Neurosciences
dc.subject 515 Psychology
dc.subject MONKEY SUPERIOR COLLICULUS
dc.subject PRIMARY VISUAL-CORTEX
dc.subject EYE-MOVEMENTS
dc.subject BRIGHTNESS PERCEPTION
dc.subject PERIPHERAL-VISION
dc.subject STRIATE CORTEX
dc.subject REPRESENTATION
dc.subject FIELD
dc.subject ORGANIZATION
dc.subject RESOLUTION
dc.title Luminance gradient at object borders communicates object location to the human oculomotor system en
dc.type Article
dc.contributor.organization Medicum
dc.contributor.organization Perception Action Cognition
dc.contributor.organization Department of Psychology and Logopedics
dc.contributor.organization University of Helsinki
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1038/s41598-018-19464-1
dc.relation.issn 2045-2322
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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