Selected Publications by N.A. Giudice and associates
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For other bibliographic information, see the index for Giudice et al., at Google Scholar and PubMed.
Orientation and wayfinding
Citation:
Long, R.G., & Giudice, N.A. (in press). Orientation and wayfinding. In B.B. Blasch, W.R. Wiener, & R.W. Welsh (Eds.), Foundations of orientation and mobility, 3rd Edition. New York: American Foundation for the Blind.
Long, R.G., & Giudice, N.A. (in press). Orientation and wayfinding. In B.B. Blasch, W.R. Wiener, & R.W. Welsh (Eds.), Foundations of orientation and mobility, 3rd Edition. New York: American Foundation for the Blind.
Abstract:
Most people give little thought to how they navigate, including the information they use when planning and executing routes or re-establishing their orientation when they become disoriented. People with typical vision generally indicate a...
Most people give little thought to how they navigate, including the information they use when planning and executing routes or re-establishing their orientation when they become disoriented. People with typical vision generally indicate a...
Spatial learning and navigation using a virtual verbal display
Citation:
Giudice, N. A., Bakdash, J. Z., Legge, G. E., & Roy, R. (2010). Spatial learning and navigation using a virtual verbal display. ACM Transactions on Applied Perception, 7(1), 3:1-3:22 (Article 3).
Giudice, N. A., Bakdash, J. Z., Legge, G. E., & Roy, R. (2010). Spatial learning and navigation using a virtual verbal display. ACM Transactions on Applied Perception, 7(1), 3:1-3:22 (Article 3).
Abstract:
We report on three experiments that investigate the efficacy of a new type of interface, called a virtual verbal display (VVD) for non-visual learning and navigation of computer-based virtual environments (VEs). Although verbal information has...
We report on three experiments that investigate the efficacy of a new type of interface, called a virtual verbal display (VVD) for non-visual learning and navigation of computer-based virtual environments (VEs). Although verbal information has...
Evidence for amodal representations after bimodal learning: Integration of haptic-visual layouts into a common spatial image
Citation:
Giudice, N. A., Klatzky, R. L., & Loomis, J. M. (2009). Evidence for amodal representations after bimodal learning: Integration of haptic-visual layouts into a common spatial image. Spatial Cognition & Computation, 9(4), 287-304.
Giudice, N. A., Klatzky, R. L., & Loomis, J. M. (2009). Evidence for amodal representations after bimodal learning: Integration of haptic-visual layouts into a common spatial image. Spatial Cognition & Computation, 9(4), 287-304.
Abstract:
Participants learned circular layouts of 6 objects presented haptically or visually, then indicated the direction from a start target to an end target of the same or different modality (intra-modal versus inter-modal). When objects from the two...
Participants learned circular layouts of 6 objects presented haptically or visually, then indicated the direction from a start target to an end target of the same or different modality (intra-modal versus inter-modal). When objects from the two...
Modality independent coding of 3d layout: fMRI evidence for PPA involvement of haptic and visual scenes by sighted and blind participants
Citation:
Giudice, N. A., Wutte, M., Klatzky, R. L., Loomis, J. M., and Wolbers, T. (2009). Modality independent coding of 3d layout: fMRI evidence for PPA involvement of haptic and visual scenes by sighted and blind participants. 50th Annual Psychonomics Society Meeting. Boston, MA.
Giudice, N. A., Wutte, M., Klatzky, R. L., Loomis, J. M., and Wolbers, T. (2009). Modality independent coding of 3d layout: fMRI evidence for PPA involvement of haptic and visual scenes by sighted and blind participants. 50th Annual Psychonomics Society Meeting. Boston, MA.
Abstract:
The Parahippocampal Place Area (PPA) has been established as a brain area crucial for extracting the visuospatial structure of 3D scenes. However, previous research has only been carried out with visual stimuli. We propose that the PPA is...
The Parahippocampal Place Area (PPA) has been established as a brain area crucial for extracting the visuospatial structure of 3D scenes. However, previous research has only been carried out with visual stimuli. We propose that the PPA is...
Learning with virtual verbal displays: Effects of interface fidelity on cognitive map development
Citation:
Giudice, N. A., & Tietz, J. D. (2008). Learning with virtual verbal displays: Effects of interface fidelity on cognitive map development. In C. Freksa, S. N. Newcombe, P. Gärdenfors & S. Wölfl (Eds.), Spatial cognition VI: Lecture notes in artificial intelligence (Vol. 5248, pp. 121-137). Berlin: Springer.
Giudice, N. A., & Tietz, J. D. (2008). Learning with virtual verbal displays: Effects of interface fidelity on cognitive map development. In C. Freksa, S. N. Newcombe, P. Gärdenfors & S. Wölfl (Eds.), Spatial cognition VI: Lecture notes in artificial intelligence (Vol. 5248, pp. 121-137). Berlin: Springer.
Abstract:
We investigate verbal learning and cognitive map development of simulated layouts using a non-visual interface called a virtual verbal display (VVD). Previous studies have questioned the efficacy of VVDs in supporting cognitive mapping (Giudice,...
We investigate verbal learning and cognitive map development of simulated layouts using a non-visual interface called a virtual verbal display (VVD). Previous studies have questioned the efficacy of VVDs in supporting cognitive mapping (Giudice,...
Learning building layouts with non-geometric visual information: The effects of visual impairment and age
Citation:
Kalia, A., Legge, G.E., & Giudice, N.A. (2008). Learning building layouts with non-geometric visual information: The effects of visual impairment and age. perception, 37(11), 1677-1699.
Kalia, A., Legge, G.E., & Giudice, N.A. (2008). Learning building layouts with non-geometric visual information: The effects of visual impairment and age. perception, 37(11), 1677-1699.
Abstract:
Previous studies suggest that humans rely on geometric visual information (hallway structure) rather than non-geometric visual information (e.g. doors, signs, and lighting) for acquiring cognitive maps of novel indoor layouts. In this study we...
Previous studies suggest that humans rely on geometric visual information (hallway structure) rather than non-geometric visual information (e.g. doors, signs, and lighting) for acquiring cognitive maps of novel indoor layouts. In this study we...
Blind navigation and the role of technology
Citation:
Giudice, N. A., & Legge, G. E. (2008). Blind navigation and the role of technology. In A. Helal, M. Mokhtari & B. Abdulrazak (Eds.), Engineering handbook of smart technology for aging, disability, and independence (pp. 479-500): John Wiley & Sons.
Giudice, N. A., & Legge, G. E. (2008). Blind navigation and the role of technology. In A. Helal, M. Mokhtari & B. Abdulrazak (Eds.), Engineering handbook of smart technology for aging, disability, and independence (pp. 479-500): John Wiley & Sons.
Abstract:
The purpose of this chapter is to highlight some of the tools and navigational technologies available to blind individuals to support independent travel. Our focus here is on blind navigation in large-scale, unfamiliar environments but the...
The purpose of this chapter is to highlight some of the tools and navigational technologies available to blind individuals to support independent travel. Our focus here is on blind navigation in large-scale, unfamiliar environments but the...
An n-back task using vibrotactile stimulation with comparison to an auditory analogue
Citation:
Klatzky, R.L., Giudice, N.A., Marston, J.R., Tietz, J.D., Golledge, R.G., & Loomis, J.M. (2008). An n-back task using vibrotactile stimulation with comparison to an auditory analogue. Behavior Research Methods, 40(1), 367-372.
Klatzky, R.L., Giudice, N.A., Marston, J.R., Tietz, J.D., Golledge, R.G., & Loomis, J.M. (2008). An n-back task using vibrotactile stimulation with comparison to an auditory analogue. Behavior Research Methods, 40(1), 367-372.
Abstract:
We report a vibrotactile version of the common n-back task used to study working memory. Subjects wore vibrotactile stimulators on three fingers of one hand, and they responded by pressing a button with the other hand whenever the current finger...
We report a vibrotactile version of the common n-back task used to study working memory. Subjects wore vibrotactile stimulators on three fingers of one hand, and they responded by pressing a button with the other hand whenever the current finger...
An Indoor Navigation System to Support the Visually Impaired
Citation:
Riehle, T.H., Lichter, P., & Giudice, N.A. (2008). An Indoor Navigation System to Support the Visually Impaired. Proceedings of the 30th annual IEEE Engineering in Medicine and Biology conference. V. 2008, PP. 4435-4438. August 20-24, Vancouver, Canada.
Riehle, T.H., Lichter, P., & Giudice, N.A. (2008). An Indoor Navigation System to Support the Visually Impaired. Proceedings of the 30th annual IEEE Engineering in Medicine and Biology conference. V. 2008, PP. 4435-4438. August 20-24, Vancouver, Canada.
Abstract:
Indoor navigation technology is needed to support seamless mobility for the visually impaired. A small portable personal navigation device that provides current position, useful contextual wayfinding information about the indoor environment and...
Indoor navigation technology is needed to support seamless mobility for the visually impaired. A small portable personal navigation device that provides current position, useful contextual wayfinding information about the indoor environment and...
Environmental Learning without Vision: Effects of Cognitive Load on Interface Design
Citation:
Giudice, N.A., Marston, J.R., Klatzky, R.L., Loomis, J.M, & Golledge, R.G. (2008). Environmental Learning without Vision: Effects of Cognitive Load on Interface Design. Proceedings of the 9th International Conference on Low Vision (Vision 2008), Montreal, Canada.
Giudice, N.A., Marston, J.R., Klatzky, R.L., Loomis, J.M, & Golledge, R.G. (2008). Environmental Learning without Vision: Effects of Cognitive Load on Interface Design. Proceedings of the 9th International Conference on Low Vision (Vision 2008), Montreal, Canada.
Abstract:
Blindfolded participants were guided along routes from two display modes: spatial language ("left," "right," or "straight") or spatialized audio (where the perceived sound location indicates the target direction)....
Blindfolded participants were guided along routes from two display modes: spatial language ("left," "right," or "straight") or spatialized audio (where the perceived sound location indicates the target direction)....
Wayfinding with words: Spatial learning and navigation using dynamically-updated verbal descriptions
Citation:
Giudice, N.A., Bakdash, J.Z., & Legge, G.E. (2007). Wayfinding with words: Spatial learning and navigation using dynamically-updated verbal descriptions. Psychological Research, 71(3), 347-58.
Giudice, N.A., Bakdash, J.Z., & Legge, G.E. (2007). Wayfinding with words: Spatial learning and navigation using dynamically-updated verbal descriptions. Psychological Research, 71(3), 347-58.
Abstract:
This work investigates whether large-scale indoor layouts can be learned and navigated non-visually, using verbal descriptions of layout geometry that are updated, e.g. contingent on a participant's location in a building. In previous...
This work investigates whether large-scale indoor layouts can be learned and navigated non-visually, using verbal descriptions of layout geometry that are updated, e.g. contingent on a participant's location in a building. In previous...
Cognitive load of navigating without vision when guided by virtual sound versus spatial language
Citation:
Klatzky, R.L., Marston, J.R., Giudice, N.A., Golledge, R.G., & Loomis, J.M. (2006). Cognitive load of navigating without vision when guided by virtual sound versus spatial language. Journal of Experimental Psychology: Applied, 12(4), 223-232.
Klatzky, R.L., Marston, J.R., Giudice, N.A., Golledge, R.G., & Loomis, J.M. (2006). Cognitive load of navigating without vision when guided by virtual sound versus spatial language. Journal of Experimental Psychology: Applied, 12(4), 223-232.
Abstract:
A vibrotactile N-back task was used to generate cognitive load while participants were guided along virtual paths without vision. As participants stepped in place, they moved along a virtual path of linear segments. Information was provided en...
A vibrotactile N-back task was used to generate cognitive load while participants were guided along virtual paths without vision. As participants stepped in place, they moved along a virtual path of linear segments. Information was provided en...
Orientation specificity with vision and touch: Map learning, haptic updating, and functional equivalence
Citation:
Giudice, N.A., Betty, M.r., & Loomis, J.M. (2006). Orientation specificity with vision and touch: Map learning, haptic updating, and functional equivalence. Journal of Vision, 6(6), 178a.
Giudice, N.A., Betty, M.r., & Loomis, J.M. (2006). Orientation specificity with vision and touch: Map learning, haptic updating, and functional equivalence. Journal of Vision, 6(6), 178a.
Abstract:
When people visually inspect a map, the map’s orientation at learning is known to be privileged in memory (Orientation Specificity). That is, judgments aligned with the map are reliably more accurate than those which are mis-aligned (Alignment...
When people visually inspect a map, the map’s orientation at learning is known to be privileged in memory (Orientation Specificity). That is, judgments aligned with the map are reliably more accurate than those which are mis-aligned (Alignment...
Wayfinding without vision: Learning real and virtual environments using dynamically-updated verbal descriptions
Citation:
Giudice, N.A. (2006). Wayfinding without vision: Learning real and virtual environments using dynamically-updated verbal descriptions. Conference on Assistive Technologies for Vision and Hearing Impairment. July, Kufstein, Austria.
Giudice, N.A. (2006). Wayfinding without vision: Learning real and virtual environments using dynamically-updated verbal descriptions. Conference on Assistive Technologies for Vision and Hearing Impairment. July, Kufstein, Austria.
Abstract:
This paper describes the details and rationale for a dynamically-updated, context-sensitive verbal interface, which has been developed to support learning and wayfinding of indoor environments. The purpose of this interface is to serve as a non-...
This paper describes the details and rationale for a dynamically-updated, context-sensitive verbal interface, which has been developed to support learning and wayfinding of indoor environments. The purpose of this interface is to serve as a non-...
Digital sign system for indoor wayfinding for the visually impaired
Citation:
Tjan, B.S., Beckmann, P.J., Roy, R., Giudice, N.A., & Legge, G.E. (2005). Digital sign system for indoor wayfinding for the visually impaired. Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR) - Workshops, 3, 30A. San Diego, CA.
Tjan, B.S., Beckmann, P.J., Roy, R., Giudice, N.A., & Legge, G.E. (2005). Digital sign system for indoor wayfinding for the visually impaired. Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR) - Workshops, 3, 30A. San Diego, CA.
Abstract:
Mobility challenges and independent travel are major concerns for blind and visually impaired pedestrians. Navigation and wayfinding in unfamiliar indoor environments are particularly challenging because blind pedestrians do not have ready access...
Mobility challenges and independent travel are major concerns for blind and visually impaired pedestrians. Navigation and wayfinding in unfamiliar indoor environments are particularly challenging because blind pedestrians do not have ready access...
Comparing verbal and visual information displays for learning building layouts
Citation:
Giudice, N.A. & Legge, G.E. (2004). Comparing verbal and visual information displays for learning building layouts. Journal of Vision, 4(8) 889a.
Giudice, N.A. & Legge, G.E. (2004). Comparing verbal and visual information displays for learning building layouts. Journal of Vision, 4(8) 889a.
Abstract:
PURPOSE. Are verbal descriptions as effective as visual input for learning spatial layouts? We asked whether people can learn building layouts through exploration of computer-based virtual displays that use synthetic speech to describe layout...
PURPOSE. Are verbal descriptions as effective as visual input for learning spatial layouts? We asked whether people can learn building layouts through exploration of computer-based virtual displays that use synthetic speech to describe layout...
Navigating novel environments: A comparison of verbal and visual learning
Citation:
Giudice, N. A. (2004). Navigating novel environments: A comparison of verbal and visual learning. Unpublished Dissertation, University of Minnesota, Twin Cities, MN.
Giudice, N. A. (2004). Navigating novel environments: A comparison of verbal and visual learning. Unpublished Dissertation, University of Minnesota, Twin Cities, MN.
Abstract:
The purpose of this dissertation research was to investigate how well individuals learn novel indoor environments by means of verbal descriptions. Seven experiments were conducted addressing the following four questions: 1) Does spatial learning...
The purpose of this dissertation research was to investigate how well individuals learn novel indoor environments by means of verbal descriptions. Seven experiments were conducted addressing the following four questions: 1) Does spatial learning...
Navigating without vision: A role for spatial language?
Citation:
Giudice, N.A., Legge, G.E., & Bakdash, J.Z. (2003). Navigating without vision: A role for spatial language? Journal of Vision, 3(9), p.489a.
Giudice, N.A., Legge, G.E., & Bakdash, J.Z. (2003). Navigating without vision: A role for spatial language? Journal of Vision, 3(9), p.489a.
Abstract:
PURPOSE. We are interested in how well geometric information about the layout of a building can be conveyed by spatial language. Can people explore and learn building layouts nonvisually using verbal descriptions? Does learning strategy or...
PURPOSE. We are interested in how well geometric information about the layout of a building can be conveyed by spatial language. Can people explore and learn building layouts nonvisually using verbal descriptions? Does learning strategy or...
Tactile vision: Brain-reorganization in the blind: Implications for learning and adaptive technology
Citation:
Giudice, N.A. (2002). Tactile vision: Brain-reorganization in the blind: Implications for learning and adaptive technology. Seventeenth Annual CSUN International Conference on Technology and Persons with Disabilities, March, 2002, Los Angeles, CA.
Giudice, N.A. (2002). Tactile vision: Brain-reorganization in the blind: Implications for learning and adaptive technology. Seventeenth Annual CSUN International Conference on Technology and Persons with Disabilities, March, 2002, Los Angeles, CA.
Abstract:
This paper describes research from our lab about the brain's ability to reorganize (called cross-modal brain plasticity) as a result of blindness. I will begin by discussing cortical brain plasticity in general, show an experiment carried...
This paper describes research from our lab about the brain's ability to reorganize (called cross-modal brain plasticity) as a result of blindness. I will begin by discussing cortical brain plasticity in general, show an experiment carried...
The relation of vision and touch: Spatial learning of small-scale layouts
Citation:
Giudice, N.A., Mason, S.J., & Legge, G.E. (2002). The relation of vision and touch: Spatial learning of small-scale layouts. Journal of Vision, 2(7), 522a.
Giudice, N.A., Mason, S.J., & Legge, G.E. (2002). The relation of vision and touch: Spatial learning of small-scale layouts. Journal of Vision, 2(7), 522a.
Abstract:
PURPOSE. Little is known about the comparison of learning time and accuracy between visual and haptic exploration of spatial layouts. In this study, we compared performance on the time to learn and perfectly reproduce four small-scale layouts (...
PURPOSE. Little is known about the comparison of learning time and accuracy between visual and haptic exploration of spatial layouts. In this study, we compared performance on the time to learn and perfectly reproduce four small-scale layouts (...
Are visual landmarks necessary for effective transfer of navigational knowledge between real and virtual buildings?
Citation:
Schlicht, E.J., Legge, G.E., Stankiewicz, B.J., & Giudice, N.A. (2001). Are visual landmarks necessary for effective transfer of navigational knowledge between real and virtual buildings? Annual Meeting of the Association of Research in Vision and Ophthalmology (ARVO), Ft. Lauderdale, FL.
Schlicht, E.J., Legge, G.E., Stankiewicz, B.J., & Giudice, N.A. (2001). Are visual landmarks necessary for effective transfer of navigational knowledge between real and virtual buildings? Annual Meeting of the Association of Research in Vision and Ophthalmology (ARVO), Ft. Lauderdale, FL.
Abstract:
Many theories have been set-forth to explain how humans acquire spatial information. In many of these theories, landmarks have played an important role. For example, route knowledge is thought to be acquired by temporally stringing together a...
Many theories have been set-forth to explain how humans acquire spatial information. In many of these theories, landmarks have played an important role. For example, route knowledge is thought to be acquired by temporally stringing together a...
Tactile vision in the blind: An fMRI experiment on pattern recognition and brain plasticity
Citation:
Giudice, N.A., Madison, C.M., Zhuang, J.C., Costello, P.A., Legge, G.E., Hu, X., & He, S. (2000). Tactile vision in the blind: An fMRI experiment on pattern recognition and brain plasticity. Annual Meeting of the Association for Research in Vision and Ophthalmology, Supp. IOVS, 40, S49, Ft. Lauderdale, FL.
Giudice, N.A., Madison, C.M., Zhuang, J.C., Costello, P.A., Legge, G.E., Hu, X., & He, S. (2000). Tactile vision in the blind: An fMRI experiment on pattern recognition and brain plasticity. Annual Meeting of the Association for Research in Vision and Ophthalmology, Supp. IOVS, 40, S49, Ft. Lauderdale, FL.
Abstract:
Purpose. It is unclear exactly what information processing is occurring in the visual cortices of blind people. Several studies using Positron Emission tomography and Transcranial Magnetic Stimulation (Sadato, 1996 & 1998, Buchel, 1998,...
Purpose. It is unclear exactly what information processing is occurring in the visual cortices of blind people. Several studies using Positron Emission tomography and Transcranial Magnetic Stimulation (Sadato, 1996 & 1998, Buchel, 1998,...
Distal target localization by the blind
Citation:
Bruggeman, H., Giudice, N.A., Stankiewicz, B.J., & Legge, G.E. (2000). Distal target localization by the blind. Annual Meeting of the Association for Research in Vision and Ophthalmology, Supp. IOVS, 40, S431, Ft. Lauderdale, FL.
Bruggeman, H., Giudice, N.A., Stankiewicz, B.J., & Legge, G.E. (2000). Distal target localization by the blind. Annual Meeting of the Association for Research in Vision and Ophthalmology, Supp. IOVS, 40, S431, Ft. Lauderdale, FL.
Abstract:
Purpose: An important component of spatial navigation is the ability to localize and approach distal targets. For example, to enter a building one has to find important structural features such as the entrance, the elevator and room signs. These...
Purpose: An important component of spatial navigation is the ability to localize and approach distal targets. For example, to enter a building one has to find important structural features such as the entrance, the elevator and room signs. These...