Document Detail

Visual influences on echo suppression.
MedLine Citation:
PMID:  21276724     Owner:  NLM     Status:  MEDLINE    
Locating sounds in realistic scenes is challenging because of distracting echoes and coarse spatial acoustic estimates. Fortunately, listeners can improve performance through several compensatory mechanisms. For instance, their brains perceptually suppress short latency (1-10 ms) echoes by constructing a representation of the acoustic environment in a process called the precedence effect. This remarkable ability depends on the spatial and spectral relationship between the first or precedent sound wave and subsequent echoes. In addition to using acoustics alone, the brain also improves sound localization by incorporating spatially precise visual information. Specifically, vision refines auditory spatial receptive fields and can capture auditory perception such that sound is localized toward a coincident visual stimulus. Although visual cues and the precedence effect are each known to improve performance independently, it is not clear whether these mechanisms can cooperate or interfere with each other. Here we demonstrate that echo suppression is enhanced when visual information spatially and temporally coincides with the precedent wave. Conversely, echo suppression is inhibited when vision coincides with the echo. These data show that echo suppression is a fundamentally multisensory process in everyday environments, where vision modulates even this largely automatic auditory mechanism to organize a coherent spatial experience.
Christopher W Bishop; Sam London; Lee M Miller
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-01-27
Journal Detail:
Title:  Current biology : CB     Volume:  21     ISSN:  1879-0445     ISO Abbreviation:  Curr. Biol.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-02-08     Completed Date:  2011-07-01     Revised Date:  2014-09-14    
Medline Journal Info:
Nlm Unique ID:  9107782     Medline TA:  Curr Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  221-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
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MeSH Terms
Acoustic Stimulation
Auditory Perception*
Photic Stimulation
Time Factors
Visual Perception*
Grant Support
3R01-DC008171-04S1/DC/NIDCD NIH HHS; F31 DC011429-01/DC/NIDCD NIH HHS; F31-DC011429/DC/NIDCD NIH HHS; R01 DC008171/DC/NIDCD NIH HHS; R01 DC008171-04/DC/NIDCD NIH HHS; R01 DC008171-04S1/DC/NIDCD NIH HHS; R01-DC008171/DC/NIDCD NIH HHS
Comment In:
Curr Biol. 2011 Mar 22;21(6):R229-31   [PMID:  21419991 ]

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