On the origin of the Ponzo illusion: An attentional account.

Kirsch, Wladimir; Kunde, Wilfried

doi:10.1037/xhp0001171

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2024

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“…Based on these (and similar) results, we reasoned that the origin of some geometrical illusions is closely related to spatial attention. So far, we found preliminary evidence for this claim for the Ebbinghaus, Helmholtz’ square and Ponzo figures ( Kirsch and Kunde, 2021b , 2023 , 2024 ). Encouraged by these results, we here aimed to take a closer look at whether and how attention could be responsible for geometrical illusions in general.…”

Section: Introductionmentioning

confidence: 78%

An attentional approach to geometrical illusions

Kirsch,

Kunde

2024

Front. Psychol.

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It is known for a long time that some drawings composed of points, lines, and areas are systematically misperceived. The origin of these geometrical illusions is still unknown. Here we outline how a recent progress in attentional research contributes to a better understanding of such perceptual distortions. The basic idea behind this approach is that crucial elements of a drawing are differently attended. These changes in the allocation of spatial attention go along with systematic changes in low-level spatial coding. As a result, changes in the perception of spatial extent, angles, positions, and shapes can arise. How this approach can be applied to individual illusions is discussed.

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Section: Introductionmentioning

confidence: 78%