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The influence of noise exposure on the parameters of a convolution model of the compound action potential
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10.1121/1.2967890
/content/asa/journal/jasa/124/4/10.1121/1.2967890
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/4/10.1121/1.2967890

Figures

Image of FIG. 1.
FIG. 1.

PTA thresholds computed from 4, 8, and for each animal in this study. The open symbols represent the animals that did not receive noise exposure. The filled symbols are PTAs from noise-exposed animals.

Image of FIG. 2.
FIG. 2.

Symbols represent the mean correlation computed from all of the animals between the analytic CAP and the physiologic CAPs. The error bars indicate standard deviation.

Image of FIG. 3.
FIG. 3.

CAPs from a control (left panel) and noise-exposed animal (right panel). Gray lines are the physiologic recorded CAPs, and the black lines are the analytic CAPs. PTA is the average CAP threshold at 4, 8, and . The fits between the physiologic CAPs and analytic CAPs are indicated by .

Image of FIG. 4.
FIG. 4.

The change with signal of the parameter values from Eqs. (1) and (2) [, top panels] and Eq. (3) [, bottom panels] for the two animals presented in Fig. 3. The stimulus was . Dashed lines indicate the control animal, and the solid lines indicate the noise-exposed animal.

Image of FIG. 5.
FIG. 5.

The change in with signal level for the control group animals (dashed lines) and noise-exposed animals (solid lines). Each line represents one animal’s -level function.

Image of FIG. 6.
FIG. 6.

Estimated -level functions using Eq. (4) with the coefficients from each individual animal. Control animals are indicated by dashed lines, and noise-exposed animals are represented by solid lines.

Image of FIG. 7.
FIG. 7.

The change in as a function of signal level for the control (dashed lines) and noise-exposed animals (solid lines).

Image of FIG. 8.
FIG. 8.

Predicted -level functions from Eq. (4) using each animal’s coefficients. Dashed and solid lines indicate control and noise exposed animals, respectively.

Image of FIG. 9.
FIG. 9.

Parameter at (left panel) and at the threshold signal level (right panel). Filled circles are for animals with , and open circles are for animals with . The error bars represent the standard error of the mean.

Image of FIG. 10.
FIG. 10.

(Color online) -level values at plotted as a function of sensation level (i.e., dB above threshold). The solid thick line is the average value computed across the control animals, and the gray lines are the data from each of the noise-exposed animals. The circle illustrates the region where animals show steeper growth functions than the control animals.

Tables

Generic image for table
TABLE I.

Coefficient values for -level growth functions, goodness of fit, and variability among animals.

Generic image for table
TABLE II.

Coefficient values for -level growth functions, goodness of fit, and variability among animals.

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/content/asa/journal/jasa/124/4/10.1121/1.2967890
2008-10-01
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The influence of noise exposure on the parameters of a convolution model of the compound action potential
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/4/10.1121/1.2967890
10.1121/1.2967890
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