Publications

van der Helm, P. A. (2012).
Cognitive architecture of perceptual organization: From neurons to gnosons.
Cognitive Processing, 13, 13--40.
Abstract     Full text

van der Helm, P. A. (2011).
Bayesian confusions surrounding simplicity and likelihood in perceptual organization.
Acta Psychologica, 138, 337--346.
Abstract     Full text

van der Helm, P. A. (2011).
The influence of perception on the distribution of multiple symmetries in nature and art.
Symmetry, 3, 54--71.
[Contribution to special issue "Symmetry processing in perception and art"]
Abstract     Full text

Treder, M. S., van der Vloed, G., & van der Helm, P. A. (2011).
Interactions between constituent single symmetries in multiple symmetry.
Attention, Perception, & Psychophysics, 73, 1487--1502.
Abstract     Full text

van der Helm, P. A. (2010).
Weber-Fechner behaviour in symmetry perception?
Attention, Perception, & Psychophysics, 72, 1854--1864.
Abstract     Full text

van der Helm, P. A., & Treder, M. S. (2009).
Detection of (anti)symmetry and (anti)repetition: Perceptual mechanisms versus cognitive strategies.
Vision Research, 49, 2754--2763.
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Treder, M. S., & van der Helm, P. A. (2007).
Symmetry versus repetition in cyclopean vision: a microgenetic analysis.
Vision Research, 47, 2956--2967.
Abstract     Full text

van der Helm, P. A. (2007).
Kaleidoscopic motion and velocity illusions.
Vision Research, 47, 460--465.
Abstract     Full text     Appendix/Demo

van der Helm, P. A. (2007).
The resurrection of simplicity in vision.
In M. A. Peterson, B. Gillam, & H. A. Sedgwick (Eds.),
In the Mind's Eye: Julian Hochberg on the Perception of Pictures, Films, and the World (pp. 518--524).
New York: Oxford University Press.
Abstract     Full text

van der Vloed, G., Csathó, Á., & van der Helm, P. A. (2007).
Effects of asynchrony on symmetry perception.
Psychological Research, 71, 170--177.
Abstract     Full text

van der Helm, P. A. (2006).
Book review of F. Sundqvist (2003), Perceptual Dynamics.
Philosophical Psychology, 19, 267--279.
Abstract     Full text

van der Vloed, G., Csathó, Á., & van der Helm, P. A. (2005).
Symmetry and repetition in perspective.
Acta Psychologica, 120, 74--92.
Abstract     Full text

van der Helm, P. A. (2004).
Transparallel processing by hyperstrings.
Proceedings of the National Academy of Sciences USA, 101 (30), 10862--10867.
Abstract     Full text     Appendices

Csathó, Á., van der Vloed, G., & van der Helm, P. A. (2004).
The force of symmetry revisited: Symmetry-to-noise ratios regulate (a)symmetry effects.
Acta Psychologica, 117, 233--250.
Abstract     Full text

van der Helm, P. A., & Leeuwenberg, E. L. J. (2004).
Holographic goodness is not that bad: Reply to Olivers, Chater, and Watson (2004).
Psychological Review, 111, 261--273.
Abstract     Full text

van der Helm, P. A., van Lier, R., & Wagemans, J. (2003).
Special Issue on "Visual Gestalt formation".
Acta Psychologica, 114, 211--213.
[Editorial]
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van der Helm, P. A., van Lier, R., & Wagemans, J. (Eds.) (2003).
Visual Gestalt formation.
Acta Psychologica, 114, 211--398.
[Special issue]
Contents

Csathó, Á., van der Vloed, G., & van der Helm, P. A. (2003).
Blobs strengthen repetition but weaken symmetry.
Vision Research, 43, 993--1007.
Abstract     Full text

van der Helm, P. A. (2002).
Natural selection of visual symmetries.
Behavioral and Brain Sciences, 25, 422--423, 432--438.
[Commentary]
Abstract     Full text

van der Helm, P. A. (2000).
Simplicity versus likelihood in visual perception: From surprisals to precisals.
Psychological Bulletin, 126, 770--800.
Abstract     Full text

Leeuwenberg, E. L. J., & van der Helm, P. A. (2000).
A code-theoretic note on object handedness.
Perception, 29, 5--29.
Abstract     Full text

van der Helm, P. A., & Leeuwenberg, E. L. J. (1999).
A better approach to goodness: Reply to Wagemans (1999).
Psychological Review, 106, 622--630.
Abstract     Full text

Olivers, C. N. L., & van der Helm, P. A. (1998).
Symmetry and selective attention: A dissociation between effortless perception and serial search.
Perception & Psychophysics, 60, 1101--1116.
Abstract     Full text

van der Helm, P. A. (1998).
Het holografische karakter van visuele regelmaat [Tigers and flowers].
KNAW Yearbook 1998, 49--53.
Full text

van Lier, R. J., Leeuwenberg, E. L. J., & van der Helm, P. A. (1997).
In support of hierarchy in object representations.
Psychological Research, 60, 134--143.
Abstract     Full text

van der Helm, P. A., & Leeuwenberg, E. L. J. (1996).
Goodness of visual regularities: A nontransformational approach.
Psychological Review, 103, 429--456.
Abstract     Full text

van Lier, R. J., Leeuwenberg, E. L. J., & van der Helm, P. A. (1995).
Multiple completions primed by occlusion patterns.
Perception, 24, 727--740.
Abstract     Full text

van Lier, R. J., van der Helm, P. A., & Leeuwenberg, E. L. J. (1995).
Competing global and local completions in visual occlusion.
Journal of Experimental Psychology: Human Perception and Performance, 21, 571--583.
Abstract     Full text

Leeuwenberg, E. L. J., van der Helm, P. A., & van Lier, R. J. (1994).
From geons to structure: A note on object representation.
Perception, 23, 505--515.
Abstract     Full text

van Lier, R. J., van der Helm, P. A., & Leeuwenberg, E. L. J. (1994).
Integrating global and local aspects of visual occlusion.
Perception, 23, 883--903.
Abstract     Full text

van der Helm, P. A. (1994).
The dynamics of Prägnanz.
Psychological Research, 56, 224--236.
Abstract     Full text

Hanssen, A., Leeuwenberg, E. L. J., & van der Helm, P. A. (1993).
Metrical information load of lines and angles in line patterns.
Psychological Research, 55, 191--199.
Abstract     Full text

van der Helm, P. A., van Lier, R. J., & Leeuwenberg, E. L. J. (1992).
Serial pattern complexity: Irregularity and hierarchy.
Perception, 21, 517--544.
Abstract     Full text

Leeuwenberg, E. L. J., & van der Helm, P. A. (1991).
Unity and variety in visual form.
Perception, 20, 595--622.
Abstract     Full text

van der Helm, P. A., & Leeuwenberg, E. L. J. (1991).
Accessibility, a criterion for regularity and hierarchy in visual pattern codes.
Journal of Mathematical Psychology, 35, 151--213.
Abstract     Full text

van der Helm, P. A. (1988).
Accessibility and simplicity of visual structures.
PhD thesis, University of Nijmegen, The Netherlands.

van der Helm, P. A., & Leeuwenberg, E. L. J. (1986).
Avoiding explosive search in automatic selection of simplest pattern codes.
Pattern Recognition, 19, 181--191.
Abstract     Full text

van der Helm, P. A. (1981).
Prolongations of the weak-turbulence three-wave equation:
computation and evaluation by means of formula manipulation.
Masters thesis, University of Twente, The Netherlands.

van der Helm, P. A. (1979).
Numerical analysis for a hydro-motor with constant rotor speed.
Research report, University of Twente, The Netherlands.

van der Helm, P. A. (1979).
Graph-theoretical findings on matrix-bandwidth reduction.
Bachelors thesis, University of Twente, The Netherlands.

Cahit, I., Chung, F. R. K., & van der Helm, P. A. (1978).
Problem 77-15: A conjectured minimum valuation tree.
SIAM Review, 20, 601--604.
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