Information Processing of Complex Sounds in the Anteroventral Cochlear Nucleus

1988 ◽  
Author(s):  
William P. Shofner
Keyword(s):  
Information Processing ◽  
Cochlear Nucleus ◽  
Complex Sounds ◽  
Anteroventral Cochlear Nucleus

Modelling the sensitivity of cells in the anteroventral cochlear nucleus to spatiotemporal discharge patterns

1992 ◽  
Vol 336 (1278) ◽  
pp. 403-406 ◽  
Keyword(s):  
Cochlear Nucleus ◽  
Auditory Nerve ◽  
Cross Correlation ◽  
Low Frequency ◽  
Phase Spectrum ◽  
Coincidence Detection ◽  
Potential Mechanism ◽  
Complex Sounds ◽  
Anteroventral Cochlear Nucleus ◽  
Discharge Patterns

This study investigates a potential mechanism for the processing of acoustic information that is encoded in the spatiotemporal discharge patterns of auditory nerve (AN) fibres. Recent physiological evidence has demonstrated that some low-frequency cells in the anteroventral cochlear nucleus (AVCN) are sensitive to manipulations of the phase spectrum of complex sounds (Carney 1990 b ). These manipulations result in systematic changes in the spatiotemporal discharge patterns across groups of low-frequency an fibres having different characteristic frequencies (CFS). One interpretation of these results is that these neurons in the AVCN receive convergent inputs from AN fibres with different CFS, and that the cells perform a coincidence detection or cross-correlation upon their inputs. This report presents a model that was developed to test this interpretation.

scholarly journals Influence of Inhibitory Inputs on Rate and Timing of Responses in the Anteroventral Cochlear Nucleus

2008 ◽  
Vol 99 (3) ◽  
pp. 1077-1095 ◽  
Author(s):  
Yan Gai ◽  
Laurel H. Carney
Keyword(s):  
Spontaneous Activity ◽  
Cochlear Nucleus ◽  
Response Duration ◽  
Response Patterns ◽  
Complex Sounds ◽  
Functional Roles ◽  
Anteroventral Cochlear Nucleus ◽  
New Information ◽  
Evoked Activity ◽  
High Level

Anatomical and physiological studies have shown that anteroventral cochlear nucleus (AVCN) neurons receive glycinergic and GABAergic inhibitory inputs. In this study, changes in the temporal responses of AVCN neurons to pure tones and complex sounds after blocking inhibition were analyzed. Blocking inhibition influenced the temporal responses of each type of AVCN neuron. Choppers showed more chopping peaks and shortened chopping cycles after blocking inhibition. Sustained and slowly adapting choppers showed increased regularity throughout the response duration after blocking inhibition, whereas most transient choppers showed increased regularity in the early part of the response. Diverse changes in temporal response patterns were observed in neurons with primary-like and unusual responses, with several neurons showing a large decrease in the first-spike latency after blocking inhibition. This result disagreed with previous findings that onset responses are less affected than sustained responses by manipulating inhibition. Although blocking inhibition had a greater effect on spontaneous activity than that on tone-evoked activity, the change in spontaneous activity was less significant because of larger variability. In addition, for relatively high level masker noises, blocking inhibition had similar effects on responses to noise-alone and noise-plus-tone stimuli, in contrast with previous studies with low-level background noise. In general, inhibition had an enhancing effect on temporal contrast only for responses to amplitude-modulated tones, for which envelope synchrony was enhanced. Results of this study contribute new information about the characteristics, functional roles, and possible sources of inhibitory inputs received by AVCN neurons.

scholarly journals Multidimensional Characterization and Differentiation of Neurons in the Anteroventral Cochlear Nucleus

PLoS ONE ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. e29965 ◽  
Author(s):  
Marei Typlt ◽  
Bernhard Englitz ◽  
Mandy Sonntag ◽  
Susanne Dehmel ◽  
Cornelia Kopp-Scheinpflug ◽  
...  
Keyword(s):  
Cochlear Nucleus ◽  
Anteroventral Cochlear Nucleus

Wiener kernel analysis of responses from anteroventral cochlear nucleus neurons

1984 ◽  
Vol 14 (2) ◽  
pp. 155-174 ◽  
Author(s):  
Robert E. Wickesberg ◽  
John W. Dickson ◽  
Mary Morton Gibson ◽  
C. Daniel Geisler
Keyword(s):  
Cochlear Nucleus ◽  
Kernel Analysis ◽  
Wiener Kernel ◽  
Anteroventral Cochlear Nucleus

scholarly journals Interaction of Excitation and Inhibition in Anteroventral Cochlear Nucleus Neurons That Receive Large Endbulb Synaptic Endings

2002 ◽  
Vol 22 (24) ◽  
pp. 11004-11018 ◽  
Author(s):  
Cornelia Kopp-Scheinpflug ◽  
Susanne Dehmel ◽  
Gerd J. Dörrscheidt ◽  
Rudolf Rübsamen
Keyword(s):  
Cochlear Nucleus ◽  
Anteroventral Cochlear Nucleus
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