Structural properties of spatial representations in blind people: Scanning images constructed from haptic exploration or from locomotion in a 3-D audio virtual environment

Afonso, Amandine; Blum, Alan; Katz, Brian F. G.; Tarroux, Philippe; Borst, Grégoire; Denis, Michel

doi:10.3758/mc.38.5.591

Cited by 74 publications

(71 citation statements)

References 42 publications

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“…However, they did not measure response latencies, so participants who ignored the rotation may have had sufficient time to mentally realign their orientation. People who are blind from birth do not show this discrepancy between imagined and actual movement; they have poor performance in both cases (Rieser et al, 1986) but may also form spatial representations through other means that can at times be superior to those of sighted individuals (Afonso et al, 2010). In contrast, late-blind people show the same discrepancy as sighted individuals (Rieser et al, 1986).…”

Section: Idiothetic Information In Spatial Updatingmentioning

confidence: 76%

Active and passive contributions to spatial learning

2011

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It seems intuitively obvious that active exploration of a new environment will lead to better spatial learning than will passive exposure. However, the literature on this issue is decidedly mixed-in part, because the concept itself is not well defined. We identify five potential components of active spatial learning and review the evidence regarding their role in the acquisition of landmark, route, and survey knowledge. We find that (1) idiothetic information in walking contributes to metric survey knowledge, (2) there is little evidence as yet that decision making during exploration contributes to route or survey knowledge, (3) attention to place-action associations and relevant spatial relations contributes to route and survey knowledge, although landmarks and boundaries appear to be learned without effort, (4) route and survey information are differentially encoded in subunits of working memory, and (5) there is preliminary evidence that mental manipulation of such properties facilitates spatial learning. Idiothetic information appears to be necessary to reveal the influence of attention and, possibly, decision making in survey learning, which may explain the mixed results in desktop virtual reality. Thus, there is indeed an active advantage in spatial learning, which manifests itself in the task-dependent acquisition of route and survey knowledge.

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Section: Idiothetic Information In Spatial Updatingmentioning

confidence: 76%

Active and passive contributions to spatial learning

2011

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“…The goal is thus to complement and go beyond what is possible with the use of traditional assistive devices (e.g., white cane or guide dog) and not to replace them. As an example, VI people use most of the time egocentric spatial representation strategies [16][17][18]. This involves that the various paths they know throughout their environment are well learned.…”

Section: Analysis: User Task Contextmentioning

confidence: 99%

Navigation and space perception assistance for the visually impaired: The NAVIG project

Kammoun¹,

Parseihian²,

Gutierrez³

et al. 2012

IRBM

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“…The results highlight the role of 3D audio cues to convey spatial information. The use of spatial audio in a navigation aid has recently been investigated by while (Afonso, Blum, Katz, Tarroux, Borst, & Denis, 2010) used tactile or spatialized audio renderings to evaluate spatial cognition skills in visually impaired and blindfolded individuals. Similarly, (Lahav & D. Mioduser, 2008) and (Traylor & Tan, 2002) highlighted the role of kinesthetic and vibrotactile cues supporting cognitive mapping of A c c e p t e d M a n u s c r i p t 6 unknown 3D spaces and conveying navigation and spatial orientation information through guidance strategies.…”

Section: Strategies For Exploration and Target Searchmentioning

confidence: 99%

Intermodal Audio-Haptic Metaphor: Improvement of Target Search in Abstract Environments

Ammi¹,

Katz²

2014

International Journal of Human-Computer Interaction

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Applications requiring processing of complex environments present real challenges for simultaneous management of numerous constraints (multiple DoF, search criterion, etc.). Target searching is probably among the most critical tasks, consisting of finding configurations corresponding to various criteria (e.g., maximum, minimum, reference). During the search, users need to be aware of proximal results to compare values and make decisions. A new audio-haptic coupling strategy is proposed to improve the search for targets in complex environments, enabling the simultaneous use of both audio and haptic channels for value comparisons at different spatial configurations. This is accomplished through the use of tempo in both sensorial signals creating a connection between the two channels enabling an intuitive and efficient comparison. Including spatialized audio improves user's situation awareness. The benefit of this intermodal metaphor is evaluated for a 2D nonvisual and abstract environment. Results show improvements relative to simple haptic exploration.

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Structural properties of spatial representations in blind people: Scanning images constructed from haptic exploration or from locomotion in a 3-D audio virtual environment

Cited by 74 publications

References 42 publications

Active and passive contributions to spatial learning

Active and passive contributions to spatial learning

Navigation and space perception assistance for the visually impaired: The NAVIG project

Intermodal Audio-Haptic Metaphor: Improvement of Target Search in Abstract Environments

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