Masking Of Action Potentials In The Guinea Pig Cochlea, Its Relation To Adaptation

Eggermont, Jos J.; Spoor, A.

doi:10.3109/00206097309089321

Cited by 17 publications

(12 citation statements)

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“…There appear to be some interactions of stimulus level and noise level on peak latencies in the present investigation, and in the work of Burkard and Hecox (1983) and Eggermont and Spoor (1973). However, each of these studies also demonstrated an additivity of stimulus level and noise level for certain aspects of BAER and WNAP peak latency.…”

Section: Noise Levelcontrasting

confidence: 67%

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Stimulus dependencies of the gerbil brain-stem auditory-evoked response (BAER). III: Additivity of click level and rate with noise level

Burkard

Voigt²

1990

The Journal of the Acoustical Society of America

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Two experiments were performed that evaluated the effects of ipsilateral-direct broadband noise maskers on the gerbil brain-stem auditory-evoked response (BAER) to click stimuli. In experiment 1, clicks were presented at 27 Hz at levels including 70, 80, 90, and 100 dB pSPL. Noise conditions included a no-noise control, and included noise levels varying in 10-dB increments from 20 dB SPL to a maximum noise level of 50, 60, 70, and 80 dB SPL for click levels of 70, 80, 90, and 100 dB pSPL, respectively. Gerbil BAER peaks were labeled with small roman numerals to distinguish them from human BAER peaks. The dependent variables included waves i and v latencies and amplitudes. Peak latencies increased and peak amplitudes decreased with decreasing click level and increasing noise level. To a first approximation, peak latencies and amplitudes showed changes with increasing noise level that were similar across click level. With increasing click level, there was little or no effect on the i-v interval. There was an increase in the i-v interval with increasing noise level. In experiment 2, click level was held constant at 90 dB pSPL, and click rates included 15, 40, 65, and 90 Hz. For each click rate, noise conditions included a no-noise control, and noise levels included 20, 30, 40, 50, 60, and 70 dB SPL. With increasing click rate and noise level, there was an increase in peak latencies, an increase in the i-v interval, and a decrease in peak amplitudes. The magnitude of peak latency and amplitude shifts with increasing click rate was dependent on noise level. Specifically, the magnitude of rate-dependent changes decreased with increasing level of broadband noise. These data are compared to human BAER experiments, and are found to be in fundamental agreement.

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Section: Noise Levelcontrasting

confidence: 67%

“…In contrast, the present investigation found little effect of click level on the slope of the gerbil wave v latency/noise-level function (see Table II). Eggermont and Spoor (1973) studied the effects of tone-burst level and noise level on N 1 of the guinea pig whole nerve action potential (WNAP). For moderate TABLE VI.…”

Section: Noise Levelmentioning

confidence: 99%

Stimulus dependencies of the gerbil brain-stem auditory-evoked response (BAER). III: Additivity of click level and rate with noise level

Burkard

Voigt²

1990

The Journal of the Acoustical Society of America

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“…6 can also be deduced from Fig. 6 of Eggermont and Spoor (1973). They also noted the relationship between the different rates of masking and the two segments of the AP magnitude functions.…”

Section: The Plots Shown Inmentioning

confidence: 96%

“…It is known that A P mas king does occur when the mas ke r precedes the probe (Coats, 1964), and some parametric data are also available (Spoor and Eggermont, 1971; Eggermont and Spoor, 1973).…”

Section: B Tuning Curves: Forward Maskingmentioning

confidence: 99%

“…The usual masking method is to present a continuous background noise, even though forward masking of the AP has been demonstrated over ten years ago (Coats, 1964). Explorations of simultaneous and forward masking effects have been provided by Spoor (1965), Spoor and Eggermont (1971), Eggermont and Spoor (1973), and Eggermont and Odenthai (1974). Extremely limited work has been done on tone-on-tone AP masking (Kupperman, 1971;Spoor and Eggermont, 1971).…”

Section: Introductionmentioning

confidence: 98%

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Compound action potential (AP) tuning curves

Dallos

Cheatham

1976

The Journal of the Acoustical Society of America

204

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With a tone-on-tone masking procedure the compound action potential (AP), elicited by brief tone bursts of set frequency and intensity, was decreased by a constant fraction. The frequency-intensity pairs formed by the masker that yield this decrease generate the AP tuning curve. It is demonstrated that such tuning curves are very similar to both psychophysical tuning curves and single VIIIth-nerve-fiber tuning curves. Changes in the properties of these curves are described as functions of stimulus frequency and level, mode of masking (simultaneous and forward), and parameters of the masker. Subject Classification: [43]65.40, [43]65.42, [43]65.58.

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Cochlear adaptation: A theoretical description

Eggermont¹

1975

Biol. Cybernetics

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Cochlear adaptation is postulated to arise in the haircell-first auditory neuron junction due to steady-state reactions between transmitter quanta and receptor sites, thus forming transmitterreceptor complexes which are destroyed enzymatically. The striking resemblance betweell this mechanism and the occupation and liberation of lines in telephone exchanges led us to apply a wellestablished stochastic theory for the latter to the adaptation phenomena in the peripheral hearing organ. The theory is evaluated by comparison with experimental data from forward-masking experiments using the compound action potential as a sensor and also with single-nerve fibre data from the literature.

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Masking Of Action Potentials In The Guinea Pig Cochlea, Its Relation To Adaptation

Cited by 17 publications

References 0 publications

Stimulus dependencies of the gerbil brain-stem auditory-evoked response (BAER). III: Additivity of click level and rate with noise level

Stimulus dependencies of the gerbil brain-stem auditory-evoked response (BAER). III: Additivity of click level and rate with noise level

Compound action potential (AP) tuning curves

Cochlear adaptation: A theoretical description

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