Electronic Travel Aids New Directions for Research (1986) / Chapter Skim
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r~s~r~h wi th blind individuals has received far too investigators although there are 50mR little attention by experienced _ _ ~- ~ notable exceptions. Research is needed on how much information is required by the blind traveler, the use of natural cue correspondence, the role of information redundancy, orientation in space, and the nature of the perceptual-motor learning processes that underlie the use of mobility aids.
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More emphasis is needed, therefore, on research exploring the possibility of coding spatial distance through a sonar system with some complex form of acoustical amplitude, and on the design and development of an artificial device to simulate tactile perception. With respect to the enhancement of low vision, common measurement metrics expressed in visual terms need to be developed to evaluate vision substitution systems.
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. Further improvements in electronic travel aids will be limited less by technology than by knowledge of the information needed by the traveler and the capacity of the nonvisual senses to process that information in suitably coded displays.
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