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Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
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Comparing Tactile to Auditory Guidance for Blind Individuals.

Arnav Bharadwaj1, Saurabh Bhaskar Shaw2, Daniel Goldreich1,2

  • 1Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, ON, Canada.

Frontiers in Human Neuroscience
|January 11, 2020
PubMed
Summary

Tactile navigation aids using vibrations offer a promising alternative to auditory systems for blind individuals. Performance improved in noisy environments, suggesting practical benefits for independent travel.

Keywords:
blindnesshapticnavigationspatial orientation and wayfindingvibrationvisual impairmentwaypoint

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Area of Science:

  • Assistive technology
  • Human-computer interaction
  • Sensory substitution

Background:

  • Independent travel is vital for quality of life but challenging for visually impaired individuals.
  • Current auditory navigational aids can mask crucial environmental sounds.
  • Non-auditory sensory modalities are needed for safer navigation.

Purpose of the Study:

  • To evaluate the efficacy of a tactile navigational aid using vibrations.
  • To compare tactile navigation with conventional auditory navigation for blind individuals.
  • To assess the impact of ambient noise on navigation performance.

Main Methods:

  • 12 blind participants navigated paths using a hip-worn tactile belt or auditory commands.
  • Performance metrics included time-to-completion and navigational errors.
  • Testing occurred in both silent and simulated street sound conditions.

Main Results:

  • In silence, tactile navigation resulted in longer completion times and more errors compared to auditory cues.
  • With simulated street sounds, the performance difference between tactile and auditory navigation decreased.
  • Tactile navigation showed comparable effectiveness to auditory navigation in noisy environments.

Conclusions:

  • Tactile navigation is a viable alternative to auditory aids, especially in noisy real-world settings.
  • Vibratory feedback offers a non-intrusive method for conveying navigational information.
  • This technology holds potential for enhancing independent travel for the visually impaired.