NDLI: An assessment of auditory-guided locomotion in an obstacle circumvention task

Content Provider	PubMed Central
Author	Kolarik, Andrew J. Scarfe, Amy C. Moore, Brian C. J. Pardhan, Shahina
Abstract	This study investigated how effectively audition can be used to guide navigation around an obstacle. Ten blindfolded normally sighted participants navigated around a 0.6 × 2 m obstacle while producing self-generated mouth click sounds. Objective movement performance was measured using a Vicon motion capture system. Performance with full vision without generating sound was used as a baseline for comparison. The obstacle’s location was varied randomly from trial to trial: it was either straight ahead or 25 cm to the left or right relative to the participant. Although audition provided sufficient information to detect the obstacle and guide participants around it without collision in the majority of trials, buffer space (clearance between the shoulder and obstacle), overall movement times, and number of velocity corrections were significantly (p < 0.05) greater with auditory guidance than visual guidance. Collisions sometime occurred under auditory guidance, suggesting that audition did not always provide an accurate estimate of the space between the participant and obstacle. Unlike visual guidance, participants did not always walk around the side that afforded the most space during auditory guidance. Mean buffer space was 1.8 times higher under auditory than under visual guidance. Results suggest that sound can be used to generate buffer space when vision is unavailable, allowing navigation around an obstacle without collision in the majority of trials.
Related Links	http://dx.doi.org/10.1007/s00221-016-4567-y
Ending Page	1735
Page Count	11
Starting Page	1725
File Format	PDF
ISSN	00144819
e-ISSN	14321106
Journal	Experimental Brain Research
Volume Number	234
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-06-01
Access Restriction	Open
Rights Holder	Springer Berlin Heidelberg
Subject Keyword	Neuroscience(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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