Navigation assistance for blind pedestrians: guidelines for the design of devices and implications for spatial cognition*

Gallay, Mathieu; Denis, Michel; Auvray, Malika

doi:10.1093/acprof:oso/9780199679911.003.0011

Cited by 14 publications

(9 citation statements)

References 28 publications

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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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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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“…Therefore, the primary objective for the device is to help visually impaired people improve their daily autonomy and ability to mentally represent their environment beyond what is possible with the use of traditional assistive devices. The visually impaired most often employ egocentric spatial representation strategies [8,11]. This implies that the various paths they know throughout their environment are well learned.…”

Section: User Needs and Participatory Designmentioning

confidence: 99%

“…The system should permit visually impaired individuals to move about towards a desired destination in a sure and precise manner, without interfering with normal behavior or mobility. The approach used has been based on a needs analysis of the visually impaired [8].…”

Section: Introductionmentioning

confidence: 99%

NAVIG: Guidance system for the visually impaired using virtual augmented reality

Katz

Dramas

Parseihian

et al. 2012

TAD

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Finding ones way to an unknown destination, navigating complex routes, finding inanimate objects; these are all tasks that can be challenging for the visually impaired. The project NAVIG (Navigation Assisted by artificial VIsion and GNSS) is directed towards increasing the autonomy of visually impaired users in known and unknown environments, exterior and interior, large scale and small scale, through a combination of a Global Navigation Satellite System (GNSS) and rapid visual recognition with which the precise position of the user can be determined. Relying on geographical databases and visually identified objects, the user is guided to his or her desired destination through spatialized semantic audio rendering, always maintained in the head-centered reference frame. This paper presents the overall project design and architecture of the NAVIG system. In addition, details of the new type of detection and localization device are presented in relation to guidance directives developed through participative design with potential users and educators for the visually impaired. A fundamental concept in this project is the belief that this type of assistive device is able to solve one of the major problems faced by the visually impaired: their difficulty in localizing specific objects.

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“…The reference frame (or perspective) used in a description appears to influence the formation of a spatial model ( Taylor and Tversky, 1992 ; Noordzij and Postma, 2005 , see also Gallay et al, 2013 , for a review). The main reference frames which have been considered in the literature are the egocentric reference frame (sometimes referred to as route perspective) and the allocentric reference frame (sometimes referred to as survey perspective).…”

Section: Introductionmentioning

confidence: 99%

Does Proprioception Influence Human Spatial Cognition? A Study on Individuals With Massive Deafferentation

et al. 2018

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When navigating in a spatial environment or when hearing its description, we can develop a mental model which may be represented in the central nervous system in different coordinate systems such as an egocentric or allocentric reference frame. The way in which sensory experience influences the preferred reference frame has been studied with a particular interest for the role of vision. The present study investigated the influence of proprioception on human spatial cognition. To do so, we compared the abilities to form spatial models of two rare participants chronically deprived of proprioception (GL and IW) and healthy control participants. Participants listened to verbal descriptions of a spatial environment, and their ability to form and use a mental model was assessed with a distance-comparison task and a free-recall task. Given that the loss of proprioception has been suggested to specifically impair the egocentric reference frame, the deafferented individuals were expected to perform worse than controls when the spatial environment was described in an egocentric reference frame. Results revealed that in both tasks, one deafferented individual (GL) made more errors than controls while the other (IW) made less errors. On average, both GL and IW were slower to respond than controls, and reaction time was more variable for IW. Additionally, we found that GL but not IW was impaired compared to controls in visuo-spatial imagery, which was assessed with the Minnesota Paper Form Board Test. Overall, the main finding of this study is that proprioception can influence the time necessary to use spatial representations while other factors such as visuo-spatial abilities can influence the capacity to form accurate spatial representations.

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Navigation assistance for blind pedestrians: guidelines for the design of devices and implications for spatial cognition*

Cited by 14 publications

References 28 publications

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

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

NAVIG: Guidance system for the visually impaired using virtual augmented reality

Does Proprioception Influence Human Spatial Cognition? A Study on Individuals With Massive Deafferentation

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