Individual differences in visual field shape modulate the effects of attention on the lower visual field advantage in crowding

Journal of Vision
Francesca C FortenbaughLynn C Robertson

Abstract

It has previously been reported that visual crowding of a target by flankers is stronger in the upper visual field than in the lower, and this finding has been attributed to greater attentional resolution in the lower hemifield (He, Cavanagh, & Intriligator, 1996). Here we show that the upper/lower asymmetry in visual crowding can be explained by natural variations in the borders of each individual's visual field. Specifically, asymmetry in crowding along the vertical meridian can be almost entirely accounted for by replacing the conventional definition of visual field location, in units of degrees of visual angle, with a definition based on the ratio of the extents of an individual's upper and lower visual field. We also show that the upper/lower crowding asymmetry is eliminated when stimulus eccentricity is expressed in units of percentage of visual field extent but is present when the conventional measure of visual angle is used. We further demonstrate that the relationship between visual field extent and perceptual asymmetry is most evident when participants are able to focus their attention on the target location. These results reveal important influences of visual field boundaries on visual perception, even for visual fie...Continue Reading

Citations

Oct 31, 2015·Attention, Perception & Psychophysics·Genevieve L Quek, Matthew Finkbeiner
Apr 15, 2015·Vision Research·Francesca C FortenbaughLynn C Robertson
Dec 28, 2016·Vision Research·Francesca C FortenbaughMichael Esterman
Dec 21, 2017·Frontiers in Neural Circuits·Adeola N Harewood SmithMichael A Silver
Apr 25, 2020·Journal of Vision·Fazilet Zeynep YildirimBilge Sayim
Jun 13, 2019·Scientific Reports·Lisiane HahnDomingos Garrone-Neto
Sep 29, 2020·Journal of Vision·Marc M HimmelbergMarisa Carrasco
Nov 30, 2018·Attention, Perception & Psychophysics·Francesca C FortenbaughMichael Esterman
May 28, 2019·PLoS Computational Biology·Eline R KupersJonathan Winawer
May 7, 2018·Vision·Alistair BurleighNicole Ruta
Jun 4, 2020·I-Perception·Hans Strasburger
Jan 5, 2021·Journal of Vision·Antoine BarbotMarisa Carrasco
Mar 23, 2021·Attention, Perception & Psychophysics·Hsing-Hao Lee, Su-Ling Yeh
May 27, 2021·Attention, Perception & Psychophysics·Simran PurokayasthaMarisa Carrasco

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