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The relative contribution of adaptation and temporal integration in forward masking.
MedLine Citation:
PMID:  20331134     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Forward masking has been studied extensively, but the mechanism underlying forward masking is still being debated. The aim of this study was to understand the relative contribution of adaptation and temporal integration on forward masking. In the first experiment, gap detection thresholds were measured for symmetrical and asymmetrical noise markers ranging from 10- to 30-dB SL in 5-dB increments. Further threshold measurements were made while keeping the level of the noise marker before the gap at a constant 30-dB SL while varying the level of noise marker after the gap between 10- and 25-dB SL. Noise marker sets with gap detection threshold of 20 ms or less were selected for the second experiment. In the second experiment, participants adjusted gap durations within an asymmetrical noise marker to be perceptually equal to that of symmetrical noise markers. The results will be discussed in the context of a temporal integration model, an adaptation model, and a hybrid model including both temporal integration and adaptation components.
Authors:
Naveen N Nagaraj; Jeffrey J Digiovanni
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  127     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2015     Citation Subset:  IM    
Affiliation:
Auditory Psychophysics and Signal Processing Lab., School of Hearing, Speech and Lang. Sci., Ohio Univ., Athens, OH 45701, nn328108@ohio.edu.
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