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Assistive Navigation Device for Visually Impaired—A Study on Reaction Time to Tactile Modality Stimuli
Institute of Technical Medicine, Furtwangen University, Furtwangen im Schwarzwald, Germany
Institute of Technical Medicine, Furtwangen University, Furtwangen im Schwarzwald, Germany
- 1 Institute of Technical Medicine, Furtwangen University, Furtwangen im Schwarzwald, Germany
- 2 Institute of Technical Medicine, Furtwangen University, Furtwangen im Schwarzwald, Germany
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Abstract
A tactile system to support severe visually-impaired or blind people in the world for their orientation and navigation had been developed. To optimize the design, some parameters of tactile display device were evaluated. In the present paper,we focused on the reaction time to tactile stimuli. In the test, the stimuli were produced through a vibration belt that was worn around the participants’ waist. In the choice reaction time task, the participants had to click corresponding arrow keys according to the location of a tactile signal. The findings of this study provided a reference of the reaction time range, so as to design a more effective and safe tactile navigation system.
KeywordsTactile DisplayReaction TimeSkin ReceptorAssistive TechnologyVibration Belt
- World Health Organization, “Visual Impairment and Blindness,” Fact Sheet No. 282, 2012. http://www.who.int/mediacentre/factsheets/fs282/en/
- K. Möller, J. Möller, K. O. Arras, M. Bach, S. Schumann and J. Guttmann, “Enhanced Perception for Visually Impaired People Evaluated in a Real Time Setting,” World Congress on Medical Physics and Biomedical Engineering, Vol. 25, 2009, pp. 283-286.
- R. Velázquez, “Wearable and Autonomous Biomedical Devices and Systems for Smart Environment: Issues and Characterization,” In: A. Lay-Ekuakille and S. C. Mukhopadhyay, Eds., LNEE 75, Springer, Berlin, 2010, pp. 331-349.
- F. A. Geldard, “Some Neglected Possibilities of Communication,” Science, Vol. 131, 1960, pp. 1583-1588. http://dx.doi.org/10.1126/science.131.3413.1583
- I. M. Koo, K. Jung, J. C. Koo, J. Nam, Y. K. Lee and H. R. Choi, “Development of Soft-Actuator-Based Wearable Tactile Display,” IEEE Transactions on Robotics, Vol. 24, No. 3, 2008, pp. 549-558. http://dx.doi.org/10.1109/TRO.2008.921561
- G. Ng, P. Barralon, G. Dumont, S. Schwarz and J. Ansermino, “Optimizing the Tactile Display of Physiological Information: Vibro-Tactile vs. Electrotactile stimulation, and Forearm or Wrist Location,” Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Lyon, 22-26 August 2007, pp. 4202- 4205.
- M. Ptito, S. Moesgaard, A. Gjedde and R. Kupers, “Cross-Modal Plasticity Revealed by Electrotactile Stimulation of the Tongue in the Congenitally Blind,” Brain, Vol. 128, No. 3, 2005, pp. 606-614. http://dx.doi.org/10.1093/brain/awh380
- R. Velazquez, O. Bazan and M. Magaña, “A Shoe-Integrated Tactile Display for Directional Navigation,” Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems, St. Louis, 10-15 October 2009, pp. 1235-1240.
- J. Borenstein, “The NavBelt—A Computerized Multi-Sensor Travel Aid for Active Guidance of the Blind,” Proceedings of the CSUN’s Fifth Annual Conference on Technology and Persons with Disabilities, Los Angeles, 21-24 March 1990, pp. 107-116.
- K. Tsukada and M. Yasumrua, “ActiveBelt: Belt-Type Wearable Tactile Display for Directional Navigation,” Proceedings of UbiComp2004, Nottingham, 7-10 September 2004, pp. 384-399.
- S. Nagel, C. Carl, T. Kringe, R. Märtin and P. König, “Beyond Sensory Substitution—Learning the Sixth Sense,” Neural Engineering, Vol. 2, 2005, pp. R13-R26. http://dx.doi.org/10.1088/1741-2560/2/4/R02