Transient-evoked stimulus-frequency and distortion-product otoacoustic emissions in normal and impaired ears

2005 ◽  
Vol 117 (6) ◽  
pp. 3799-3815 ◽  
Author(s):  
Dawn Konrad-Martin ◽  
Douglas H. Keefe
Keyword(s):  
Otoacoustic Emissions ◽  
Stimulus Frequency ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product

Individual Differences and the Reliability of 2F1-F2 Distortion-Product Otoacoustic Emissions

1996 ◽  
Vol 39 (6) ◽  
pp. 1138-1148 ◽  
Author(s):  
Anthony T. Cacace ◽  
William A. McClelland ◽  
Jordan Weiner ◽  
Dennis J. McFarland
Keyword(s):  
Pulse Rate ◽  
Otoacoustic Emissions ◽  
Stimulus Frequency ◽  
Gender Effects ◽  
Distortion Product Otoacoustic Emissions ◽  
Oral Temperature ◽  
Distortion Product ◽  
Time Period ◽  
And Gender ◽  
Subject Differences

Distortion product otoacoustic emissions (DPOAEs) measured from the ear canal can be a sensitive tool to detect changes in cochlear function over time. However, if multiplemeasurement procedures are to be useful clinically, testing needs to be reliable and sources of variability within individuals should be known. Herein, the influence of time-of-day (TOD), stimulus frequency, stimulus sound pressure level (SPL), and gender were evaluated on 2f1-f2 DPOAE amplitude in 16 adult volunteers with normal hearing. The effects of oral temperature and resting-pulse rate were also assessed. This study demonstrated a TOD main effect, with a period approximating one cycle-per-day. The magnitude of this effect averaged less than one dB and was not dependent on stimulus (frequency or SPL) or participant variables (gender, oral temperature, or resting-pulse rate), nor was it synchronized to a particular point-in-time. Stimulus level and gender effects on DPOAEs across frequency were also observed. Using generalizability theory (GT), DP iso-level/frequency profiles (DPILFPs) were found to be reliable measures within-subjects over a contiguous 24-hour time period. Significant and reliable between-subject differences were also documented. This study demonstrates the influence of stimulus and participant variables, quantifies the within-subject reliability over a 24-hour time period, and confirms that significant and reliable between-subject differences exist on DPOAEs across frequency, SPL, and gender.

Relationship Between Distortion Product Otoacoustic Emissions and Hearing Loss

2006 ◽  
Vol 2 (1) ◽  
pp. 2-9
Author(s):  
Tiffany A. Johnson ◽  
Stephen T. Neely ◽  
Michael P. Gorga
Keyword(s):  
Hearing Loss ◽  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product

Distortion product otoacoustic emissions upon ear canal pressurization

2013 ◽  
Vol 133 (4) ◽  
pp. EL331-EL337 ◽  
Author(s):  
Makram Zebian ◽  
Volker Schirkonyer ◽  
Johannes Hensel ◽  
Sven Vollbort ◽  
Thomas Fedtke ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Ear Canal ◽  
Distortion Product

Dependence of distortion‐product otoacoustic emissions on primary levels in normal and impaired ears. II. Asymmetry in L1,L2 space

1995 ◽  
Vol 97 (4) ◽  
pp. 2359-2377 ◽  
Author(s):  
M. L. Whitehead ◽  
B. B. Stagner ◽  
M. J. McCoy ◽  
B. L. Lonsbury‐Martin ◽  
G. K. Martin
Keyword(s):  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product

scholarly journals Reducing reflected contributions to ear-canal distortion product otoacoustic emissions in humans

2006 ◽  
Vol 119 (6) ◽  
pp. 3896-3907 ◽  
Author(s):  
Tiffany A. Johnson ◽  
Stephen T. Neely ◽  
Judy G. Kopun ◽  
Michael P. Gorga
Keyword(s):  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Ear Canal ◽  
Distortion Product
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