The force of symmetry revisited: symmetry-to-noise ratios regulate (a)symmetry effects

Csathó, Árpád; Vloed, Gert van der; Helm, Peter A. van der

doi:10.1016/j.actpsy.2004.06.004

Cited by 26 publications

(30 citation statements)

References 21 publications

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“…This combination of robustness and sensitivity to perturbations suggests that the amount of symmetry is rather accurately represented in the visual system. This idea was corroborated by Csatho et al [73], who suggested that the salience of symmetry is a linear function of the noise proportion. Recently, this view was refined by van der Helm, who argued that symmetry detection deviates from Weber-Fechner law [74].…”

Section: Temporal Efficiency and Noise-resistancesupporting

confidence: 70%

“…Furthermore, it makes quantitative predictions concerning the goodness (i.e., detectability) of a regularity. For instance, it predicts a graceful degradation of the goodness of symmetry with noise, which is supported by virtually all literature on symmetry detection [46,71,73]. A more detailed discussion on the commonalities and differences between TA and HA can be found in references [2,116,118].…”

Section: Representational Modelsmentioning

confidence: 57%

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Behind the Looking-Glass: A Review on Human Symmetry Perception

2010

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The human visual system is highly proficient in extracting bilateral symmetry from visual input. This paper reviews empirical and theoretical work on human symmetry perception with a focus on recent issues such as its neural underpinnings. Symmetry detection is shown to be a versatile, ongoing visual process that interacts with other visual processes. Evidence seems to converge towards the idea that symmetry detection is subserved by a preprocessing stage involving spatial filters followed by information integration across the visual field in higher-tier cortical areas.

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Section: Temporal Efficiency and Noise-resistancesupporting

confidence: 70%

Section: Representational Modelsmentioning

confidence: 57%

Behind the Looking-Glass: A Review on Human Symmetry Perception

2010

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“…For instance, qualitatively, the formal notion of holographic regularity seems to supply a perceptually relevant border between visual and nonvisual regularities [54], and also the holographic difference in structure between symmetry (point structure) and repetition (block structure) seems perceptually relevant [55]. Furthermore, the quantitative model W = E/N accounts for various perceptual differences between symmetry and repetition, including the fact that symmetry is better detectable than repetition, and it accounts for the detectability of symmetry in the presence of noise (for more details, see [21,26,49,51,56,57]). …”

Section: The Holographic Approachmentioning

confidence: 99%

The Influence of Perception on the Distribution of Multiple Symmetries in Nature and Art

Helm

2011

Symmetry

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Much is already known about single mirror symmetry, but multiple mirror symmetry is still understood poorly. In particular, perceptually, multiple symmetry does not seem to behave as suggested by the number of symmetry axes alone. Here, theoretical ideas on single symmetry perception and their extensions to multiple symmetry are discussed alongside empirical findings on multiple symmetry perception. The evidence suggests that, apart from the number of axes, also their relative orientation is perceptually relevant. This, in turn, suggests that perception is responsible for the preponderance of 3-fold and 5-fold symmetries in flowers as well as for their absence in decorative art.

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“…On the one hand, in Conditions 1 and 3, Csathó et al (2004) found no (a)symmetry effect. Condition 1 was the Both models are equally based on the assumption that d is proportional to the proposed term 1/(2 N/ N N R / / ).…”

Section: (A)symmetry Effectsmentioning

confidence: 88%

“…As indicated in Table 1 for the six conditions considered by Csathó et al (2004) More important, however, is that, at any level of symmetry, both symmetry effects and asymmetry effects are predicted to occur, depending on how R/N / / is manipulated. This is shown in N Table 1 for relatively high levels of symmetry, where Freyd and Tversky (1984) found only a symmetry effect.…”

Section: (A)symmetry Effectsmentioning

confidence: 99%