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Review

Symmetry Detection in Visual Impairment: Behavioral Evidence and Neural Correlates

by
Zaira Cattaneo
1,2,*,
Silvia Bona
3,
Corinna Bauer
4,
Juha Silvanto
3,5,
Andrew M. Herbert
6,
Tomaso Vecchi
2,7 and
Lotfi B. Merabet
4
1
Department of Psychology, University of Milano-Bicocca, 20126 Milano, Italy
2
Brain Connectivity Center, National Neurological Institute C. Mondino, 27100 Pavia, Italy
3
Brain Research Unit, OV Lounasmaa Laboratory, Aalto University School of Science, 02150 Espoo, Finland
4
Laboratory for Visual Neuroplasticity, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary Harvard Medical School, Boston, MA 02115, USA
5
Department of Psychology, Faculty of Science and Technology, University of Westminster, London W1W 6UW, UK
6
Department of Psychology, Rochester Institute of Technology, Rochester, NY 14623, USA
7
Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy
*
Author to whom correspondence should be addressed.
Symmetry 2014, 6(2), 427-443; https://doi.org/10.3390/sym6020427
Submission received: 19 February 2014 / Revised: 13 May 2014 / Accepted: 14 May 2014 / Published: 26 May 2014
(This article belongs to the Special Issue Visual Symmetry)
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Abstract

Bilateral symmetry is an extremely salient feature for the human visual system. An interesting issue is whether the perceptual salience of symmetry is rooted in normal visual development. In this review, we discuss empirical work on visual and tactile symmetry detection in normally sighted and visually impaired individuals. On the one hand, available evidence suggests that efficient visual symmetry detection may need normal binocular vision development. On the other hand, converging evidence suggests that symmetry can develop as a principle of haptic perceptual organization in individuals lacking visual experience. Certain features of visual symmetry detection, however, such as the higher salience of the patterns containing a vertical axis of symmetry, do not systematically apply to the haptic modality. The neural correlates (revealed with neuroimaging) associated with visual and haptic symmetry detection are also discussed.
Keywords: symmetry detection; blind; visual impairment; haptic; plasticity symmetry detection; blind; visual impairment; haptic; plasticity
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MDPI and ACS Style

Cattaneo, Z.; Bona, S.; Bauer, C.; Silvanto, J.; Herbert, A.M.; Vecchi, T.; Merabet, L.B. Symmetry Detection in Visual Impairment: Behavioral Evidence and Neural Correlates. Symmetry 2014, 6, 427-443. https://doi.org/10.3390/sym6020427

AMA Style

Cattaneo Z, Bona S, Bauer C, Silvanto J, Herbert AM, Vecchi T, Merabet LB. Symmetry Detection in Visual Impairment: Behavioral Evidence and Neural Correlates. Symmetry. 2014; 6(2):427-443. https://doi.org/10.3390/sym6020427

Chicago/Turabian Style

Cattaneo, Zaira, Silvia Bona, Corinna Bauer, Juha Silvanto, Andrew M. Herbert, Tomaso Vecchi, and Lotfi B. Merabet. 2014. "Symmetry Detection in Visual Impairment: Behavioral Evidence and Neural Correlates" Symmetry 6, no. 2: 427-443. https://doi.org/10.3390/sym6020427

APA Style

Cattaneo, Z., Bona, S., Bauer, C., Silvanto, J., Herbert, A. M., Vecchi, T., & Merabet, L. B. (2014). Symmetry Detection in Visual Impairment: Behavioral Evidence and Neural Correlates. Symmetry, 6(2), 427-443. https://doi.org/10.3390/sym6020427

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