Document Detail


Dichotic, diotic, and monaural summation of loudness: a comprehensive analysis of composition and psychophysical functions.
MedLine Citation:
PMID:  2587186     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a series of six experiments, the method of magnitude estimation, constrained by a multivariate model, was used to assess the rules that govern the summation of the loudness of two-tone complexes. This methodology enabled us to specify the amounts of summation and simultaneously to construct the corresponding loudness scales. The components had different frequency separations and in the different experiments were presented (1) dichotically, a different frequency to each ear; (2) diotically, to both ears; and (3) monaurally. Results replicated and in some conditions extended known features of multiple signal processing by the auditory system. Thus, qualitatively different rules of loudness integration appeared. For monaural and diotic modes of stimulation, overall loudness depended on total sound energy within the critical band, but on the simple sum of component loudnesses beyond the critical band. For dichotic presentations, a fully additive rule of loudness summation appeared, regardless of frequency spacing. For the latter (but not the former), loudness summation was perfect, with the underlying loudness scales closely approximating Stevens's sone scale.
Authors:
D Algom; B Ben-Aharon; L Cohen-Raz
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Perception & psychophysics     Volume:  46     ISSN:  0031-5117     ISO Abbreviation:  Percept Psychophys     Publication Date:  1989 Dec 
Date Detail:
Created Date:  1989-12-28     Completed Date:  1989-12-28     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0200445     Medline TA:  Percept Psychophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  567-78     Citation Subset:  C    
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MeSH Terms
Descriptor/Qualifier:
Attention
Auditory Threshold
Dichotic Listening Tests
Dominance, Cerebral*
Humans
Hyperacusis*
Pitch Discrimination*
Psychoacoustics
Grant Support
ID/Acronym/Agency:
NS21326/NS/NINDS NIH HHS

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


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