A new visual illusion of aspect-ratio context

J. Edwin Dickinson, Robert J. Green, Giorgia M. Harkin, Matthew F. Tang, David R. Badcock

Research output: Contribution to journalArticle

Abstract

Perception of local properties of the visual field is influenced by aftereffects of adaptation. The tilt aftereffect describes repulsion of the perceived orientation of a line from the orientation of an adapting line. Analogous effects of spatial context are often called illusions. Repulsion of the perceived orientation of a grating from the orientation of a surrounding grating is referred to as the tilt illusion. In the same manner, the size aftereffect and Ebbinghaus illusion form a complementary pair of temporal and spatial context effects of size. Here we report psychophysical evidence for a previously unknown aspect-ratio illusion which causes the perceived aspect-ratio of a rectangle to be repelled from the aspect-ratio of rectangles surrounding it. This illusion provides a spatial analogue to the aspect-ratio aftereffect.

Original languageEnglish
Pages (from-to)80-83
Number of pages4
JournalVision Research
Volume165
DOIs
Publication statusPublished - Dec 2019

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Dickinson, J. Edwin ; Green, Robert J. ; Harkin, Giorgia M. ; Tang, Matthew F. ; Badcock, David R. / A new visual illusion of aspect-ratio context. In: Vision Research. 2019 ; Vol. 165. pp. 80-83.
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A new visual illusion of aspect-ratio context. / Dickinson, J. Edwin; Green, Robert J.; Harkin, Giorgia M.; Tang, Matthew F.; Badcock, David R.

In: Vision Research, Vol. 165, 12.2019, p. 80-83.

Research output: Contribution to journalArticle

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T1 - A new visual illusion of aspect-ratio context

AU - Dickinson, J. Edwin

AU - Green, Robert J.

AU - Harkin, Giorgia M.

AU - Tang, Matthew F.

AU - Badcock, David R.

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