Amplitude of distortion product otoacoustic emissions in the guinea pig in f(1)- and f(2)-sweep paradigms |
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| Authors: | Schneider S Schoonhoven R Prijs V F |
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| Institution: | Department of ENT/Audiology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands. sandra_schnei@hotmail.com |
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| Abstract: | The amplitude versus frequency relations of distortion product otoacoustic emissions (DPOAEs) were studied in the guinea pig, using both the f(1)- and the f(2)-sweep paradigms to vary the primary frequency separation. The amplitude of the DPOAEs 2f(1)-f(2), 3f(1)-2f(2), 4f(1)-3f(2), and 2f(2)-f(1), plotted as a function of DP frequency, exhibited a bandpass structure. The separation of the primaries for which the DPOAE level is maximum is referred to as the optimum ratio f(2)/f(1). For the lower sideband DPOAEs (f(dp)
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