Temporal responses of primarylike anteroventral cochlear nucleus units to the steady‐state vowel /i/

1990 ◽  
Vol 88 (3) ◽  
pp. 1437-1441 ◽  
Author(s):  
Ian M. Winter ◽  
Alan R. Palmer
Keyword(s):  
Steady State ◽  
Cochlear Nucleus ◽  
Anteroventral Cochlear Nucleus ◽  
Cochlear Nucleus Units

The representations of the steady-state vowel sound /e/ in the discharge patterns of cat anteroventral cochlear nucleus neurons

1990 ◽  
Vol 63 (5) ◽  
pp. 1191-1212 ◽  
Author(s):  
C. C. Blackburn ◽  
M. B. Sachs
Keyword(s):  
Steady State ◽  
Cochlear Nucleus ◽  
Nerve Fibers ◽  
Stimulus Level ◽  
Complex Stimulus ◽  
Vowel Sound ◽  
Stimulus Representation ◽  
Anteroventral Cochlear Nucleus ◽  
Discharge Patterns ◽  
Bushy Cells

1. We have recorded the responses of neurons in the anteroventral cochlear nucleus (AVCN) of barbiturate-anesthetized cats to the synthetic, steady-state-vowel sound /e/, presented over a range of stimulus intensities. 2. The responses of (putative) spherical bushy cells [primary-like (Pri) units] to the vowel resemble those of auditory-nerve fibers (ANFs) in terms of both rate and temporal encoding at low and moderate stimulus levels. It was not possible to study the responses of most Pri units at the highest stimulus level because of the large neurophonic component present in recordings from most primarylike units at higher stimulus levels. 3. The responses of many (putative) globular bushy cells [primarylike with notch (PN) units] to the vowel resemble those of ANFs; however, there appears to be greater heterogeneity in the responses of units in the PN population than in the Pri population in terms of both temporal and rate encoding. 4. Populations of stellate cells (chopper units) have degraded representations of the temporal information in ANF population discharge patterns in response to the vowel; this is consistent with the responses of these units to pure tones. Both regular (ChS) and irregular (ChT) chopper subpopulations, however, maintain better rate-place representations of the vowel spectrum than does the population of ANFs as a whole. The rate-place representations of the vowel spectrum by both chopper populations closely resemble those of low and medium spontaneous rate ANFs at most stimulus levels. 5. The data presented in this paper suggest that a functional partition of the AVCN chopper population could yield two distinct rate representations in response to a complex stimulus: one that is graded with stimulus level (over a 30 to 40 dB range) and that, even at rate saturation, maintains a "low contrast" stimulus representation; and a second that maintains a robust, "high contrast" stimulus representation at all levels but that confers less information about stimulus level.

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

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 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
Sign in / Sign up

Export Citation Format

Share Document