On the origin of the Roelofs and induced Roelofs effects

Kirsch, Wladimir

doi:10.1080/13506285.2022.2092572

Cited by 2 publications

(2 citation statements)

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“…A decrease of this RF-shift (or a shift in the opposite direction) can explain the observed decrease in perceived object size with broadly distributed attention (Kirsch et al, 2018 ; Kirsch & Kunde, 2021a ). Previously, we have already suggested that such attentional mechanisms can account for optical illusions, such as the Titchener circles (or Ebbinghaus illusion) and the Roelofs illusion, at least to some extent 1 (Kirsch, 2022 ; Kirsch & Kunde, 2021b ). Here, we suggest that the same basic mechanisms are responsible for the Helmholtz’s square illusion.…”

Section: Introductionmentioning

confidence: 97%

On the origin of the Helmholtz’s square illusion: An attentional account

Kirsch

Kunde

2023

Atten Percept Psychophys

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A square filled with parallel horizontal or vertical lines appears perceptually extended in the direction orthogonal to the lines. Here, we suggest that this Helmholtz illusion arises due to changes in spatial attention that entail changes at very early stages of perceptual processing. Three experiments are reported which tested this assumption. In Experiment1 and Experiment2, transient attentional cues were flashed in such a way that they either promoted (congruent condition) or hindered (incongruent condition) the attentional state presumably induced by the target objects. We predicted a decline of the illusion in the incongruent condition compared with the congruent condition. This prediction was confirmed in both experiments. However, the influence of (in)congruent attention cuing on the Helmholtz illusion depended on more sustained distributions of attention as well. An influence of sustained attention on the illusion was confirmed in Experiment 3, in which changes of attentional focus were induced by a secondary task. Overall, the results were consistent with our claim that the origin of the Helmholtz illusion is closely linked to the distribution of spatial attention.

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Section: Introductionmentioning

confidence: 97%

On the origin of the Helmholtz’s square illusion: An attentional account

Kirsch

Kunde

2023

Atten Percept Psychophys

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“…Overall, the present approach provides a novel look at the Ponzo illusion and related observations that enrich the understanding of how these phenomena arise. Previously, we put forward similar approaches to explain other optical illusions as well (Kirsch, 2022; Kirsch & Kunde, 2021b) and believe that the basic idea is generally applicable to a wide range of perceptual distortions. However, as many different phenomena are subsumed under the umbrella of Ponzo-like illusions more research is needed to determine its scope and possible limitations.…”

Section: Discussionmentioning

confidence: 99%

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

Kirsch,

Kunde

2024

Journal of Experimental Psychology: Human Perception and Perfor

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On the origin of the Roelofs and induced Roelofs effects

Cited by 2 publications

References 50 publications

On the origin of the Helmholtz’s square illusion: An attentional account

On the origin of the Helmholtz’s square illusion: An attentional account

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

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