Embodied Space in Early Blind Individuals

Crollen, Virginie; Collignon, Olivier

doi:10.3389/fpsyg.2012.00272

Cited by 18 publications

(15 citation statements)

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“…Specifically, the way blind people experience spatial relationships sensorially may cause their temporal concepts to be constructed differently than their sighted counterparts', regardless of reading experience. Several experiments have shown that the mental organization of nonvisual spatial frames of reference (FoR) in early blind (who lost their sight before age ~3) is qualitatively different compared to sighted people (Crollen & Collignon, 2012). Studies of tactile stimulus localization (Röder, Rösler & Spence, 2004) and multisensory control of action (Collignon, Charbonneau, Lassonde & Lepore, 2009;Röder, Kusmierek, Spence & Schicke, 2007) show that whereas sighted people tend to rely on an external spatial FoR (i.e., locations are represented within a framework external to the body), the early blind preferentially use an anatomical FoR (i.e., locations are represented with respect to the position of one's body and the position of one's limbs), to represent spatial relationships.…”

Section: Introductionmentioning

confidence: 99%

Space and time in the sighted and blind

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Space and time in the sighted and blind

et al. 2015

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“…This could explain, partially at least, why congenitally blind people show level of performance in object localization and manipulation comparable to sighted agents 13 – 16 . However, some studies argued and provided evidence that visual experience may exert a dominant role in the representation of space, even affecting the auditory spatial maps, which might be involved in action planning and control 17 , 18 . These studies would seem to support the hypothesis that congenitally blind people represent their space differently from sighted agents 18 – 21 .…”

Section: Introductionmentioning

confidence: 99%

Peripersonal space representation develops independently from visual experience

Ricciardi

Menicagli

Leo

et al. 2017

Sci Rep

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Our daily-life actions are typically driven by vision. When acting upon an object, we need to represent its visual features (e.g. shape, orientation, etc.) and to map them into our own peripersonal space. But what happens with people who have never had any visual experience? How can they map object features into their own peripersonal space? Do they do it differently from sighted agents? To tackle these questions, we carried out a series of behavioral experiments in sighted and congenitally blind subjects. We took advantage of a spatial alignment effect paradigm, which typically refers to a decrease of reaction times when subjects perform an action (e.g., a reach-to-grasp pantomime) congruent with that afforded by a presented object. To systematically examine peripersonal space mapping, we presented visual or auditory affording objects both within and outside subjects’ reach. The results showed that sighted and congenitally blind subjects did not differ in mapping objects into their own peripersonal space. Strikingly, this mapping occurred also when objects were presented outside subjects’ reach, but within the peripersonal space of another agent. This suggests that (the lack of) visual experience does not significantly affect the development of both one’s own and others’ peripersonal space representation.

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“…They perform even better than sighted in various numerosity estimation tasks (Castronovo & Delvenne, 2013;Castronovo & Seron, 2007b;Ferrand, Riggs, & Castronovo, 2010) and in some calculation experiments involving addition and multiplication operations (Dormal, Crollen, Baumans, Lepore, & Collignon, 2016). Vision is therefore not mandatory for the emergence of numerical-spatial interactions, even though visual experience affects the nature of this relation (Crollen & Collignon, 2012).…”

Section: Interactions Between Number and Space In Individuals With Blmentioning

confidence: 99%

Visuo-spatial processes as a domain-general factor impacting numerical development in atypical populations

Crollen¹,

Collignon²,

Noël³

2017

J. Numer. Cogn.

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In the past few years, the role of both domain-specific and domain-general factors on numerical development and mathematics achievement has been debated. In this paper, we focus on the role of visuo-spatial processes. We will more particularly review the numerical abilities of populations presenting atypical visuo-spatial processes: individuals with blindness, hemineglect, children presenting low visuo-spatial abilities, non-verbal learning disorder or Williams syndrome. We will show that math abilities of each population are relatively unique and are not necessarily associated with generalized math impairment. We will show that a better understanding of the strengths and weaknesses of each population gives further insights into our conceptual understanding of the development of numerical cognition. We will finally demonstrate how the comparison across disorders can impact on practical rehabilitation and educational strategies.Keywords: number, space, blindness, hemineglect, NVLD, Williams syndrome Journal of Numerical Cognition, 2017, Vol. 3(2), 344-364, doi:10.5964/jnc.v3i2.44 Received: 2016-05-10. Accepted: 2017-04-13. Published (VoR): 2017-12-22.Handling Editors: Silke Goebel, University of York, York, United Kingdom; André Knops, Humboldt-Universität Berlin, Berlin, Germany; Hans-Christoph Nuerk, Universität Tübingen, Tübingen, Germany *Corresponding author at: Centre for Mind/Brain Science, University of Trento, Corso Bettini, 31, 38068 Rovereto, This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License, CC BY 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Over the past years, converging lines of evidence suggested that our representation of number is intrinsically linked to the way we represent other, non-numerical magnitude dimensions. Meck and Church (1983) were the first to speculate about a unique functional mechanism (the accumulator model) that supports numerosity and duration processing. This model was later extended by A Theory Of Magnitude (ATOM; Bueti & Walsh, 2009;Walsh, 2003) that conjectures the existence of a central magnitude system for the processing of numerosity, space and time. At the neurofunctional level, brain areas located along the right intraparietal sulcus (IPS) were accordingly shown to be involved in numerosity, length and duration discrimination (e.g., Bueti & Walsh, 2009;Cohen Kadosh et al., 2005;Dormal, Dormal, Joassin, & Pesenti, 2012;Dormal & Pesenti, 2009). At the behavioral level, several studies demonstrated similarities across different magnitude systems. Discriminating numerosities, surface areas and durations for example leads to similar patterns of performance in babies (Brannon, Lutz, & Cordes, 2006;de Hevia, Izard, Coubart, Spelke, & Streri, 2014;Lourenco & Longo, 2010;vanMarle & Wynn, 2006;Xu & Spelke, 2000; for a review, see Feigenson, 2007). And various similaritie...

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Embodied Space in Early Blind Individuals

Cited by 18 publications

References 39 publications

Space and time in the sighted and blind

Space and time in the sighted and blind

Peripersonal space representation develops independently from visual experience

Visuo-spatial processes as a domain-general factor impacting numerical development in atypical populations

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