Spatial Cognition of the Visually Handicapped: Case Study of Geometric Model Spaces with a Center Core

Abstract

Our team previously carried out a series of studies [1][2][3][4] on the spatial cognition of the visually handicapped. From these studies we ascertained that the visually handicapped are able to navigate space by walking across it -in effect, by "taking a shortcut" -to reach their destination. However, under conditions where the visually handicapped are unable to navigate space in this way -because their path has been obstructed by an "obstacle" -it is not so clear how they recognize this space, their position in it, nor what clues to aid their recognition.In this study, in order to clarify the characteristics of their spatial cognition and search behavior in such spaces, experiments are carried out in 12 kinds of geometric model spaces with a center core. The behavior of the visually handicapped is analyzed by walking locus and observation; and the spatial cognition, by sketch map and interview.

Effects of Housing Conditions and Environmental Factors on Accidents and Modification Intention of the Vision Impaired

“…The findings suggested that smaller spaces and right-angle corners are less difficult for the vision impaired to recognize (Kametani, et al, 2006a). Providing tactile maps, handrails, and door signs have also been shown to help to reduce travel time (Hwang, 2011).…”

“…Some studies have investigated environmental conditions with the goal of helping the visually handicapped navigate their surroundings (Kametani, Kishigami, & Chibana, 2006a, 2006bMotlagh et al, 2009;Hwang, 2011). The findings suggested that smaller spaces and right-angle corners are less difficult for the vision impaired to recognize (Kametani, et al, 2006a).…”

A New Path Estimation Strategy for Predicting Blind Persons′ Motion in Indoor Environments

“…The environment was constructed in a large conference room 11.5×6.2 m 2 with a large oval shape table 7.6×2.1 m 2 placed at its centre representing the environment of 6), 7) . Thirty five blind-folded subjects contributed for extraction of the motion patterns.…”

“…In the previous studies 6), 7) , such analysis has been mostly through walking locus, interview and sketch maps. However, the real-time path prediction was not included for estimation of motion patterns; and therefore, the results have been classified into a number of fixed patterns without considering the inherent variability of biological systems.…”