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Sources of variability in distortion product otoacoustic emissions
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10.1121/1.2939126
/content/asa/journal/jasa/124/2/10.1121/1.2939126
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/2/10.1121/1.2939126

Figures

Image of FIG. 1.
FIG. 1.

Mean DPOAE (circles) and noise (triangles) levels as a function of for each of the nine frequencies. Error bars .

Image of FIG. 2.
FIG. 2.

corrected plotted as a function of at each of nine frequencies. Each panel includes estimates of from 40 subjects at each of 13 levels, for a total of 520 points per panel. The dashed line at is the mean residual variance and provides a point of reference.

Image of FIG. 3.
FIG. 3.

corrected as a function of behavioral threshold, with data at nine frequencies shown separately in each panel. The line in each panel represents the quadratic function that was fitted to the data. The slope values represent the unstandardized coefficients for behavioral threshold and behavioral threshold squared, respectively. An asterisk indicates a significant relationship.

Image of FIG. 4.
FIG. 4.

corrected as a function of energy reflectance at the frequency, with data at nine frequencies shown in each panel. The line in each panel represents a linear fit to the data. The slope values represent the unstandardized coefficients for energy reflectance at the frequency. The unstandardized coefficients were examined for all variables because not all of the independent variables share the same variance and they are based on the original, not the standardized scores of the predictor. An asterisk indicates a significant relationship.

Image of FIG. 5.
FIG. 5.

corrected as a function of admittance magnitude at the frequency, with data at nine frequencies shown separately in each panel. The line in each panel represents a linear fit to the data and the slope values represent the unstandardized coefficients for admittance magnitude at the frequency. An asterisk indicates a significant relationship.

Image of FIG. 6.
FIG. 6.

corrected as a function of energy reflectance at the frequency, with data at nine frequencies shown separately in each panel. The line in each panel represents a linear fit to the data and the slope values represent the unstandardized coefficients for energy reflectance at the frequency. An asterisk indicates a significant relationship.

Image of FIG. 7.
FIG. 7.

corrected as a function of equivalent volume at the frequency, with data at nine frequencies shown separately in each panel. Following the same conventions as in Fig. 5, the line in each panel represents a linear fit to the data and the slope values represent the unstandardized coefficients for equivalent volume at the frequency. An asterisk indicates a significant relationship.

Image of FIG. 8.
FIG. 8.

DPOAE level as a function of for 1000, 2000, and plotted separately in each panel. The solid line represents the DPOAE collected without a suppressor and the dashed line represents the DPOAE collected with a suppressor tone present.

Image of FIG. 9.
FIG. 9.

Normalized slope plotted as a function of frequency. The top panel represents the status of the cochlea and plots behavioral threshold at the frequency and behavioral threshold squared at that same frequency. The second panel represents middle-ear transmission in the forward direction by plotting energy reflectance and admittance magnitude at the frequency. The third panel represents middle-ear transmission in the reverse direction by plotting energy reflectance and equivalent volume at . The bottom panel represents the reflection-source contribution. Significant values are represented by filled symbols and nonsignificant values are represented by open symbols.

Tables

Generic image for table
TABLE I.

Constant, , and -values, and residuals for each of the nine frequencies.

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/content/asa/journal/jasa/124/2/10.1121/1.2939126
2008-08-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sources of variability in distortion product otoacoustic emissions
http://aip.metastore.ingenta.com/content/asa/journal/jasa/124/2/10.1121/1.2939126
10.1121/1.2939126
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