Document Detail


Cortical processing of change in sound location: Smooth motion versus discontinuous displacement.
MedLine Citation:
PMID:  22634374     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The detection of a change in space is an essential prerequisite of adequate responding to dynamic aspects of our auditory environment, be it induced by smooth motion or abrupt and discontinuous displacements of ongoing sound sources. Here, we investigated the auditory processing of different types of spatial change using electroencephalography. While fixating straight ahead, participants listened to a free-field sound stimulus that, after an initial stationary phase in a central position, either (1) started to move horizontally (motion stimulus), or (2) changed repetitively its spatial position in random order within left or right hemispaces (scatter stimulus), or (3) shifted abruptly toward a lateral position (displacement stimulus). Irrespective of stimulus type, the onset of spatial change elicited a characteristic sequence of auditory evoked potentials that was similar to the so-called "motion-onset response" described in previous studies. Differences in response amplitudes and latencies to the different stimulus types were only gradual, with scatter and displacement producing generally stronger responses than motion. Also, inter-hemispheric asymmetry patterns in the responses to scatter differed somewhat from those obtained with the other types of changes in position. Rather than any substantial stimulus-specific differences, the findings suggest the existence of an auditory "spatial change response", that is, a common electrophysiological correlate of auditory processing of any spatial change in the environment that does not necessarily need to involve motion as such.
Authors:
Stephan Getzmann; Jörg Lewald
Related Documents :
11354434 - The influence of an immersive virtual environment on the segmental organization of post...
19955284 - Adaptive changes in anticipatory postural adjustments with novel and familiar postural ...
17279384 - Control of upright stance over inclined surfaces.
19964894 - Dynamic activity classification based on automatic adaptation of postural orientation.
14107424 - Light adaptation kinetics: the influence of spatial factors.
12784364 - Guided docking: first step to locate potential binding sites.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-24
Journal Detail:
Title:  Brain research     Volume:  -     ISSN:  1872-6240     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-5-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier B.V.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Stimulus complexity modulates contrast response functions in the human middle temporal area (hMT+).
Next Document:  Development of white matter pathways in typically developing preadolescent children.