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Distortion product otoacoustic emission phase and component analysis in human newborns
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10.1121/1.3268611
/content/asa/journal/jasa/127/1/10.1121/1.3268611
http://aip.metastore.ingenta.com/content/asa/journal/jasa/127/1/10.1121/1.3268611
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

DPOAE level as a function of DPOAE frequency for 15 adults and 14 newborns. Level was averaged into 500-Hz-wide frequency bands. The frequency displayed represents the upper limit of this band. Error .

Image of FIG. 2.
FIG. 2.

[(a)–(d)] DPOAE fine structure (thick line), phase (thin line), and noise floor (gray line) from two newborn and two adult subjects. The range of values is the same in each graph, though absolute values vary. Note that DPOAE phase is referenced to the right vertical axis.

Image of FIG. 3.
FIG. 3.

Mean DPOAE fine structure features from 15 adults and 14 newborns: (a) frequency spacing between fine structure periods and (b) depth of fine structure periods. Data were averaged into 500-Hz-wide frequency bands. The frequency displayed represents the upper limit of this band. Error .

Image of FIG. 4.
FIG. 4.

Mean DPOAE group delay (negative of the slope of the phase) as a function of DPOAE frequency for 15 adults and 14 newborns. Data were averaged into 500-Hz-wide frequency bands. The frequency displayed represents the upper limit of this band. Error .

Image of FIG. 5.
FIG. 5.

[(a) and (b)] DPOAE level as a function of frequency for each component and age group separately. The smaller inset graph shows the level difference between components (generator level subtracted from CF level) for each age group. Data were averaged into 500-Hz-wide frequency bands. The frequency displayed represents the upper limit of these bands. Error .

Image of FIG. 6.
FIG. 6.

DPOAE phase for the generator (gray) and CF component (black) as a function of DPOAE frequency for both age groups. Lines represent phase from one adult subject, whereas each newborn subject has two such traces displayed. The mean slope of phase values, calculated with a linear regression function, are shown for each age and component.

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/content/asa/journal/jasa/127/1/10.1121/1.3268611
2010-01-05
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Distortion product otoacoustic emission phase and component analysis in human newborns
http://aip.metastore.ingenta.com/content/asa/journal/jasa/127/1/10.1121/1.3268611
10.1121/1.3268611
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