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Comparing picture and video prompting in autonomous indoor wayfinding for individuals with cognitive impairments

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Abstract

A challenge to individuals with cognitive impairments in wayfinding is how to remain oriented, recall routines, and travel in unfamiliar areas in a way relying on limited cognitive capacity. According to psychological model of spatial navigation and the requirements of rehabilitation professionals, a novel wayfinding system is presented with an aim to increase workplace and life independence for people with traumatic brain injury, cerebral palsy, intellectual and developmental disabilities, schizophrenia, Down syndromes, and Alzheimer’s disease. An architecture is proposed based on Bluetooth tags and scanning PDAs. A prototype is built and tested in field experiments with real patients. Two modalities, video and picture prompts, were compared by 20 subjects with cognitive impairments. The experimental results show the computer–human interface is friendly and the capabilities of wayfinding are reliable. Video prompts performed better by 25–28% than picture prompts at the price of users feeling slightly more rushed.

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Acknowledgments

The work presented in this paper has been funded by the National Science Council under grant numbers NSC 95-2627-E-008-002-, NSC 96-2627-E-008-001-, and NSC 97-2627-E-008-001-. Thanks for all the participating job coaches who have served the mentally impaired heartily and truthfully. Thanks for all the participating individuals with cognitive impairments, who have shown us deeper values of life. We thank the anonymous reviewers for their comments and suggestions which greatly improve the presentation of the paper. We also would like to extend our special thanks to a reviewer who suggests the idea of adaptive video framerate in the future work.

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Authors and Affiliations

  1. Department of Electronic Engineering, Chung Yuan Christian University, Chung-Li, 320, Taiwan, ROC

    Yao-Jen Chang

  2. Institute of Health and Welfare Policy, National Yang Ming University, Taipei, 112, Taiwan, ROC

    Tsen-Yung Wang

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  1. Yao-Jen Chang
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  2. Tsen-Yung Wang
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Correspondence to Yao-Jen Chang.

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Chang, YJ., Wang, TY. Comparing picture and video prompting in autonomous indoor wayfinding for individuals with cognitive impairments. Pers Ubiquit Comput 14, 737–747 (2010). https://doi.org/10.1007/s00779-010-0285-9

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  • DOI: https://doi.org/10.1007/s00779-010-0285-9

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