The oscillating summed action potential of an Insect's auditory nerve (Locusta migratoria, Acrididae)

1977 ◽  
Vol 28 (2) ◽  
pp. 109-119 ◽  
Author(s):  
L. -J. Adam
Keyword(s):  
Action Potential ◽  
Auditory Nerve ◽  
Locusta Migratoria

Contribution of auditory nerve fibers to compound action potential of the auditory nerve

2014 ◽  
Vol 112 (5) ◽  
pp. 1025-1039 ◽  
Author(s):  
Jérôme Bourien ◽  
Yong Tang ◽  
Charlène Batrel ◽  
Antoine Huet ◽  
Marc Lenoir ◽  
...  
Keyword(s):  
Action Potential ◽  
Auditory Nerve ◽  
Computational Simulation ◽  
Round Window ◽  
Hearing Threshold ◽  
Compound Action Potential ◽  
Nerve Fibers ◽  
Auditory Nerve Fibers ◽  
Round Window Niche ◽  
Compound Action

Sound-evoked compound action potential (CAP), which captures the synchronous activation of the auditory nerve fibers (ANFs), is commonly used to probe deafness in experimental and clinical settings. All ANFs are believed to contribute to CAP threshold and amplitude: low sound pressure levels activate the high-spontaneous rate (SR) fibers, and increasing levels gradually recruit medium- and then low-SR fibers. In this study, we quantitatively analyze the contribution of the ANFs to CAP 6 days after 30-min infusion of ouabain into the round window niche. Anatomic examination showed a progressive ablation of ANFs following increasing concentration of ouabain. CAP amplitude and threshold plotted against loss of ANFs revealed three ANF pools: 1) a highly ouabain-sensitive pool, which does not participate in either CAP threshold or amplitude, 2) a less sensitive pool, which only encoded CAP amplitude, and 3) a ouabain-resistant pool, required for CAP threshold and amplitude. Remarkably, distribution of the three pools was similar to the SR-based ANF distribution (low-, medium-, and high-SR fibers), suggesting that the low-SR fiber loss leaves the CAP unaffected. Single-unit recordings from the auditory nerve confirmed this hypothesis and further showed that it is due to the delayed and broad first spike latency distribution of low-SR fibers. In addition to unraveling the neural mechanisms that encode CAP, our computational simulation of an assembly of guinea pig ANFs generalizes and extends our experimental findings to different species of mammals. Altogether, our data demonstrate that substantial ANF loss can coexist with normal hearing threshold and even unchanged CAP amplitude.

Electrically evoked auditory nerve action potential

1982 ◽  
Vol 71 (S1) ◽  
pp. S97-S97
Author(s):  
R. Charlet de Sauvage ◽  
Y. Cazals ◽  
J.‐M. Aran ◽  
J.‐P. Erre
Keyword(s):  
Action Potential ◽  
Auditory Nerve ◽  
Nerve Action

Contralateral Sound Stimulation Suppresses the Compound Action Potential from the Auditory Nerve in Humans

2002 ◽  
Vol 23 (5) ◽  
pp. 784-788 ◽  
Author(s):  
René Chabert ◽  
Jacques Magnan ◽  
Jean–Gabriel Lallemant ◽  
Alain Uziel ◽  
Jean–Luc Puel
Keyword(s):  
Action Potential ◽  
Auditory Nerve ◽  
Compound Action Potential ◽  
Sound Stimulation ◽  
Compound Action

Oscillatory Nervous Response and Transient Vibration (Ear of Locusta migratoria Acrididae, Insecta)

1977 ◽  
Vol 32 (3-4) ◽  
pp. 309-311 ◽  
Author(s):  
L.-J. Adam ◽  
H. Dahmen ◽  
P. Fastrich
Keyword(s):  
Action Potential ◽  
Locusta Migratoria ◽  
Oscillation Amplitude ◽  
Harmonic Oscillation ◽  
Average Level ◽  
Oscillator Model ◽  
Transient Vibration ◽  
Transient Solutions

Abstract The summed action potential (SAP) of the receptor axons in the tympanic nerve is a very regular, often nearly harmonic oscillation around an average level. The oscillation amplitude depends on the slope of the stimulus ramp, whereas the average level of the response is determined by the plateau of the ramp. Earlier hypotheses upon the tympanic SAP do not explain the above findings. Yet the transient solutions of a simple oscillator model reproduce the tympanic oscillations.

THE ELECTRICALLY EVOKED COMPOUND ACTION POTENTIAL OF THE AUDITORY NERVE. LITERATURE REVIEW

2018 ◽  
Vol 95 (4) ◽  
pp. 99-120
Author(s):  
D. S. Klyachko ◽  
◽  
A. V. Pashkov ◽  
S. V. Gadaleva ◽  
I. V. Naumova ◽  
...  
Keyword(s):  
Literature Review ◽  
Action Potential ◽  
Auditory Nerve ◽  
Compound Action Potential ◽  
Evoked Compound Action Potential ◽  
Compound Action
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