Comparison of compound action potential audiograms with distortion product otoacoustic emissions in experimentally induced hydrops

1991 ◽  
Vol 248 (5) ◽  
Author(s):  
K.C. Horner
Keyword(s):  
Action Potential ◽  
Otoacoustic Emissions ◽  
Compound Action Potential ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product ◽  
Compound Action ◽  
Experimentally Induced

scholarly journals Comparative Studies on Distortion Product Otoacoustic Emissions and Compound Action Potential in Cisplatin Treated Guinea Pigs.

1997 ◽  
Vol 40 (6) ◽  
pp. 719-723
Author(s):  
Narihisa Tachihara ◽  
Hideki Okubo ◽  
Shigenori Satoh ◽  
Kazuhiko Takahashi ◽  
Tetsurou Wada ◽  
...  
Keyword(s):  
Action Potential ◽  
Comparative Studies ◽  
Guinea Pigs ◽  
Otoacoustic Emissions ◽  
Compound Action Potential ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product ◽  
Compound Action

Time Related Changes of Distortion-product Otoacoustic Emissions and the Effect of Isosorbide in Experimentally Induced Hydropic Ears.

1995 ◽  
Vol 38 (2) ◽  
pp. 121-127
Author(s):  
Hideki Okubo ◽  
Narihisa Tachihara ◽  
Shigenori Satoh ◽  
Hiromitsu Akizuki ◽  
Yasuhisa Morita ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product ◽  
Experimentally Induced

The Effect of Contralateral Pure Tones on the Compound Action Potential in Humans: Efferent Tuning Curves

2016 ◽  
Vol 27 (02) ◽  
pp. 103-116 ◽  
Author(s):  
Fadi Najem ◽  
John Ferraro ◽  
Mark Chertoff
Keyword(s):  
Action Potential ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Compound Action Potential ◽  
Clinical Tool ◽  
Experimental Conditions ◽  
Tuning Curves ◽  
Contralateral Stimulation ◽  
Pure Tones ◽  
Compound Action

Background: The compound action potential (CAP) has been suggested in the literature as an alternative to otoacoustic emissions for evaluating the efferent auditory system. However, very few studies have examined efferent influence on auditory nerve potentials in humans. Purpose: This study examines the effects of presenting contralateral pure tones on the ipsilateral CAP onset and offset amplitudes as a potential clinical tool for the assessment of efferent auditory function. Research Design: CAPs for 1- and 4-kHz tone pips (TPs) and clicks were recorded from 9, 9, and 8 participants, respectively. Contralateral tones were presented at levels ranging from 20 to 70 dB HL in 10-dB steps. The frequencies of the contralateral tones were 0.5, 1, 2 kHz for the 1-kHz TP CAP; 2, 4, 8 kHz for the 4-kHz TP CAP; and 0.5, 1, 2, 4, 8 kHz for the click CAP. Data Analysis: The CAP onset and offset amplitudes in all experimental conditions were analyzed and compared to the CAP amplitude without contralateral stimulation (i.e., baseline). Results: Maximum suppression of 1-kHz TP CAP onset amplitude was obtained in seven out of nine participants by the 1-kHz contralateral pure tone at 40 dB HL. The 4-kHz TP CAP onset amplitude was maximally suppressed in eight out of nine participants by the 8-kHz contralateral pure tone at 30 dB HL. The click CAP offset amplitude was maximally suppressed in four out of eight participants by the 8-kHz contralateral tone presented at 40 dB HL. The 1- and 4-kHz TP CAP offset and click CAP onset amplitudes were not affected by contralateral stimulation. Conclusions: These results along with the previous studies may suggest that the efferent system is maximally stimulated by moderate signal-level tones (i.e., 30–40 dB HL), and that efferent activity is dependent on frequency cues of both the stimulus and suppressor tones. Other factors that might be affecting efferent influence on the CAP in humans such as sound duration, phase, bandwidth, and periodicity need to be further investigated.

Distortion-product Otoacoustic Emissions in Experimentally Induced Hydropic Ears

1995 ◽  
Vol 115 (sup519) ◽  
pp. 97-101 ◽  
Author(s):  
Hideki Okubo ◽  
Hiromitsu Akizuki ◽  
Nobuyoshi Kawashima ◽  
Yasuhisa Morita ◽  
Zenya Ito ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Distortion Product Otoacoustic Emissions ◽  
Distortion Product ◽  
Experimentally Induced

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
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