In this preliminary study, we compared the capabil-ity of a blind sailor to access geographical i... more In this preliminary study, we compared the capabil-ity of a blind sailor to access geographical information needed to navigate via an haptic device and via a tactile map. We assessed this spatial knowledge in an egocen-tered, an allocentered and a combined frame of refer-ence. The subject first explored haptic or tactile maps before answering a series of questions in order to locate 6 salient objects within each map. Then, we used the triangulation technique to obtain easily scoreable phys-ical representations of these cognitive locations. Basi-cally, our results showed no difference between haptic and tactile condition even if slight differences were ob-served between the frames of reference. We suggest that the subject took great advantage of the haptic map be-cause its sequential and dynamic features implied to fo-cus on learning and memorizing the movement patterns rather than directly touching the global layout with re-duced movements as it is the case when using a tactile map.
A map exploration and representation exercise was conducted with totally blind participants. Repr... more A map exploration and representation exercise was conducted with totally blind participants. Representations of maritime environments were presented either with a tactile map or with a digital haptic virtual map. We assessed the knowledge of spatial configurations using a triangulation technique. Results revealed that both types of maps are equivalent. Problem Statement All over the world, blind people practice sailing. However, they do not have access to a non-visual equivalent to maritime geographic information system (GIS) that provide digital charts, updated positioning, and real time weather updates, as commonly used by sighted sailors. This study aims at building upon previous technological and psychological knowledge to assess haptic (tactile-kinesthetic) and auditory virtual maritime maps from SeaTouch, a maritime GIS for blind sailors. Thus, we compared spatial performances obtained after the exploration of regular maritime maps in relief (tactile maps) and novel virtual ma...
ABSTRACT Avec l’approfondissement de la notion de carte cognitive spatiale, différents paramètres... more ABSTRACT Avec l’approfondissement de la notion de carte cognitive spatiale, différents paramètres ont été identifiés comme jouant un rôle dans les processus d’encodage de la représentation de l’espace au sein des référentiels de types égo et allocentrés. L’activité du sujet et la nature de la configuration environnementale se révèlent alors être des facteurs déterminants de cet encodage. Bien que les travaux dans ce domaine ne s’accordent pas systématiquement, il semble que les actions du sujet participent à l’intégration de repères centrés sur lui-même alors que les caractéristiques géométriques propres aux configurations tendent à favoriser l’intériorisation de références externes. La coordination de ces encodages de types égo et allocentrés s’impose comme une clé de la réussite des tâches spatiales. Cette note théorique vise à préciser le rôle joué par les mouvements du sujet, sa désorientation, son point de vue initial d’apprentissage, l’axe intrinsèque à la configuration ainsi que la régularité de sa forme dans la coordination des représentations de types égo et allocentrés.
ABSTRACT In this case study, we investigated the influence of two dis-plays in a haptic and audit... more ABSTRACT In this case study, we investigated the influence of two dis-plays in a haptic and auditory navigation tool used on board by a blind sailor. The displays differed in their spatial frames of reference. We assessed the control and representation of his course after having used a force feed-back device as a maritime cane (i.e. egocentric) or as a mean to conven-tionally consult an updated geographic information system (i.e. allocentric). Results tended to show that the egocentric condition was better for precise course control and the al-locentric one more efficient for building an accurate mental representation.
... univ-brest.fr} (2) Department of Geography, University of Calgary, 2500 University Dr. NW, Ca... more ... univ-brest.fr} (2) Department of Geography, University of Calgary, 2500 University Dr. NW, Calgary, Canada T2N 1N4 {dan.jacobson@ucalgary ... Eventually, it seems that lack of vision slows down ontogenic spatial development [ ] but does not prohibit it (Kitchin and Jacobson ...
... Perceptions auditives et haptiques, espaces physiques et virtuels, représentation euclidienne... more ... Perceptions auditives et haptiques, espaces physiques et virtuels, représentation euclidienne ; objet sémantique ; sensations intuitives ... l'enfant ne dispose que d'un espace d'action topologique, où ne ... à extraire les arêtes, à partir de leur disposition spatiale, combiner ces géons ...
In this preliminary study, we compared the capabil-ity of a blind sailor to access geographical i... more In this preliminary study, we compared the capabil-ity of a blind sailor to access geographical information needed to navigate via an haptic device and via a tactile map. We assessed this spatial knowledge in an egocen-tered, an allocentered and a combined frame of refer-ence. The subject first explored haptic or tactile maps before answering a series of questions in order to locate 6 salient objects within each map. Then, we used the triangulation technique to obtain easily scoreable phys-ical representations of these cognitive locations. Basi-cally, our results showed no difference between haptic and tactile condition even if slight differences were ob-served between the frames of reference. We suggest that the subject took great advantage of the haptic map be-cause its sequential and dynamic features implied to fo-cus on learning and memorizing the movement patterns rather than directly touching the global layout with re-duced movements as it is the case when using a tactile map.
A map exploration and representation exercise was conducted with totally blind participants. Repr... more A map exploration and representation exercise was conducted with totally blind participants. Representations of maritime environments were presented either with a tactile map or with a digital haptic virtual map. We assessed the knowledge of spatial configurations using a triangulation technique. Results revealed that both types of maps are equivalent. Problem Statement All over the world, blind people practice sailing. However, they do not have access to a non-visual equivalent to maritime geographic information system (GIS) that provide digital charts, updated positioning, and real time weather updates, as commonly used by sighted sailors. This study aims at building upon previous technological and psychological knowledge to assess haptic (tactile-kinesthetic) and auditory virtual maritime maps from SeaTouch, a maritime GIS for blind sailors. Thus, we compared spatial performances obtained after the exploration of regular maritime maps in relief (tactile maps) and novel virtual ma...
ABSTRACT Avec l’approfondissement de la notion de carte cognitive spatiale, différents paramètres... more ABSTRACT Avec l’approfondissement de la notion de carte cognitive spatiale, différents paramètres ont été identifiés comme jouant un rôle dans les processus d’encodage de la représentation de l’espace au sein des référentiels de types égo et allocentrés. L’activité du sujet et la nature de la configuration environnementale se révèlent alors être des facteurs déterminants de cet encodage. Bien que les travaux dans ce domaine ne s’accordent pas systématiquement, il semble que les actions du sujet participent à l’intégration de repères centrés sur lui-même alors que les caractéristiques géométriques propres aux configurations tendent à favoriser l’intériorisation de références externes. La coordination de ces encodages de types égo et allocentrés s’impose comme une clé de la réussite des tâches spatiales. Cette note théorique vise à préciser le rôle joué par les mouvements du sujet, sa désorientation, son point de vue initial d’apprentissage, l’axe intrinsèque à la configuration ainsi que la régularité de sa forme dans la coordination des représentations de types égo et allocentrés.
ABSTRACT In this case study, we investigated the influence of two dis-plays in a haptic and audit... more ABSTRACT In this case study, we investigated the influence of two dis-plays in a haptic and auditory navigation tool used on board by a blind sailor. The displays differed in their spatial frames of reference. We assessed the control and representation of his course after having used a force feed-back device as a maritime cane (i.e. egocentric) or as a mean to conven-tionally consult an updated geographic information system (i.e. allocentric). Results tended to show that the egocentric condition was better for precise course control and the al-locentric one more efficient for building an accurate mental representation.
... univ-brest.fr} (2) Department of Geography, University of Calgary, 2500 University Dr. NW, Ca... more ... univ-brest.fr} (2) Department of Geography, University of Calgary, 2500 University Dr. NW, Calgary, Canada T2N 1N4 {dan.jacobson@ucalgary ... Eventually, it seems that lack of vision slows down ontogenic spatial development [ ] but does not prohibit it (Kitchin and Jacobson ...
... Perceptions auditives et haptiques, espaces physiques et virtuels, représentation euclidienne... more ... Perceptions auditives et haptiques, espaces physiques et virtuels, représentation euclidienne ; objet sémantique ; sensations intuitives ... l'enfant ne dispose que d'un espace d'action topologique, où ne ... à extraire les arêtes, à partir de leur disposition spatiale, combiner ces géons ...
Uploads
Papers by Mathieu Simonnet