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Perceptual recalibration in human sound localization: Learning to remediate front-back reversals

Zahorik, Pavel, Bangayan, Philbert, Sundareswaran, V., Wang, Kenneth, Tam, Clement·2006·The Journal of the Acoustical Society of America
DOI 10.1121/1.2208429
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Abstract

The efficacy of a sound localization training procedure that provided listeners with auditory, visual, and proprioceptive/vestibular feedback as to the correct sound-source position was evaluated using a virtual auditory display that used nonindividualized head-related transfer functions (HRTFs). Under these degraded stimulus conditions, in which the monaural spectral cues to sound-source direction were inappropriate, localization accuracy was initially poor with frequent front-back reversals (source localized to the incorrect front-back hemifield) for five of six listeners. Short periods of training (two 30-min sessions) were found to significantly reduce the rate of front-back reversal responses for four of five listeners that showed high initial reversal rates. Reversal rates remained unchanged for all listeners in a control group that did not participate in the training procedure. Because analyses of the HRTFs used in the display demonstrated a simple and robust front-back cue related to energy in the 3–7-kHz bandwidth, it is suggested that the reductions observed in reversal rates following the training procedure resulted from improved processing of this front-back cue, which is perhaps a form of rapid perceptual recalibration. Reversal rate reductions were found to generalize to untrained source locations, and persisted at least 4months following the training procedure.

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Metadata

Authors
Zahorik, P., Bangayan, P., Sundareswaran, V., Wang, K., & Tam, C.
Affiliations
  • University of Louisville Department of Psychological and Brain Sciences, , Louisville, Kentucky 40292
  • Rockwell Scientific , 1049 Camino Dos Rios, Thousand Oaks, California 91360
Venue
The Journal of the Acoustical Society of America
Publisher
Acoustical Society of America (ASA)
Published
2006-07-01
Volume
120
Issue
1
Pages
343-359
ISSN
  • 0001-4966
  • 1520-8524
DOI
10.1121/1.2208429
Cited by
101
References
1
Language
en

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