A model of top-down gain control in the auditory system

To evaluate a model of top-down gain control in the auditory system, 6 participants were asked to identify 1-kHz pure tones differing only in intensity. There were three 20-session conditions: (1) four soft tones (25, 30, 35, and 40 dB SPL) in the set; (2) those four soft tones plus a 50-dB SPL tone...

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Detalles Bibliográficos
Autores principales: Schneider, Bruce A., Parker, Scott, Murphy, Dana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer-Verlag 2011
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3118000/
https://www.ncbi.nlm.nih.gov/pubmed/21487927
http://dx.doi.org/10.3758/s13414-011-0097-7
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author Schneider, Bruce A.
Parker, Scott
Murphy, Dana
author_facet Schneider, Bruce A.
Parker, Scott
Murphy, Dana
author_sort Schneider, Bruce A.
collection PubMed
description To evaluate a model of top-down gain control in the auditory system, 6 participants were asked to identify 1-kHz pure tones differing only in intensity. There were three 20-session conditions: (1) four soft tones (25, 30, 35, and 40 dB SPL) in the set; (2) those four soft tones plus a 50-dB SPL tone; and (3) the four soft tones plus an 80-dB SPL tone. The results were well described by a top-down, nonlinear gain-control system in which the amplifier’s gain depended on the highest intensity in the stimulus set. Individual participants’ identification judgments were generally compatible with an equal-variance signal-detection model in which the mean locations of the distribution of effects along the decision axis were determined by the operation of this nonlinear amplification system.
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spelling pubmed-31180002011-07-14 A model of top-down gain control in the auditory system Schneider, Bruce A. Parker, Scott Murphy, Dana Atten Percept Psychophys Article To evaluate a model of top-down gain control in the auditory system, 6 participants were asked to identify 1-kHz pure tones differing only in intensity. There were three 20-session conditions: (1) four soft tones (25, 30, 35, and 40 dB SPL) in the set; (2) those four soft tones plus a 50-dB SPL tone; and (3) the four soft tones plus an 80-dB SPL tone. The results were well described by a top-down, nonlinear gain-control system in which the amplifier’s gain depended on the highest intensity in the stimulus set. Individual participants’ identification judgments were generally compatible with an equal-variance signal-detection model in which the mean locations of the distribution of effects along the decision axis were determined by the operation of this nonlinear amplification system. Springer-Verlag 2011-04-13 2011 /pmc/articles/PMC3118000/ /pubmed/21487927 http://dx.doi.org/10.3758/s13414-011-0097-7 Text en © The Author(s) 2011 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Article
Schneider, Bruce A.
Parker, Scott
Murphy, Dana
A model of top-down gain control in the auditory system
title A model of top-down gain control in the auditory system
title_full A model of top-down gain control in the auditory system
title_fullStr A model of top-down gain control in the auditory system
title_full_unstemmed A model of top-down gain control in the auditory system
title_short A model of top-down gain control in the auditory system
title_sort model of top-down gain control in the auditory system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3118000/
https://www.ncbi.nlm.nih.gov/pubmed/21487927
http://dx.doi.org/10.3758/s13414-011-0097-7
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