The use of distortion product otoacoustic emission suppression as an estimate of response growth

Michael P Gorga, Stephen T Neely, Patricia A. Dorn, Dawn Konrad-Martin

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Distortion product otoacoustic emission (DPOAE) levels in response to primary pairs (f2 = 2 or 4 kHz, L2 ranging from 20 to 60 dB SPL, L1=0.4L2+39dB) were measured with and without suppressor tones (f3), which varied from 1 octave below to 1/2 octave above f2, in normal-hearing subjects. Suppressor level (L3) varied from-5 to 85 dB SPL. DPOAE levels were converted into decrements by subtracting the level in the presence of the suppressor from the level in the absence of a suppressor. DPOAE decrement vs L3 functions showed steeper slopes when f3<f2 and shallower slopes when f3>f2. This pattern is similar to other measurements of response growth, such as direct measures of basilar-membrane motion, single-unit rate-level functions, suppression of basilar-membrane motion, and discharge-rate suppression from lower animals. As L2 increased, the L3 necessary to maintain 3 dB of suppression increased at a rate of about 1 dB/dB when f3 was approximately equal to f2, but increased more slowly when f3<f2. Functions relating L3 to L2 in order to maintain a constant 3-dB reduction in DPOAE level were compared for f3<f2 and for f3≅f2 in order to derive an estimate related to "cochlear-amplifier gain." These results were consistent with the view that "cochlear gain" is greater at lower input levels, decreasing as level increases.

Original languageEnglish (US)
Pages (from-to)271-284
Number of pages14
JournalJournal of the Acoustical Society of America
Volume111
Issue number1
DOIs
StatePublished - Jan 1 2002

Fingerprint

retarding
suppressors
estimates
products
octaves
membranes
Suppression
hearing
animals
amplifiers
slopes
Octave
Membrane
Hearing
Animals

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

The use of distortion product otoacoustic emission suppression as an estimate of response growth. / Gorga, Michael P; Neely, Stephen T; Dorn, Patricia A.; Konrad-Martin, Dawn.

In: Journal of the Acoustical Society of America, Vol. 111, No. 1, 01.01.2002, p. 271-284.

Research output: Contribution to journalArticle

@article{d124650e8c9e458191807b8d0fbb8a2b,
title = "The use of distortion product otoacoustic emission suppression as an estimate of response growth",
abstract = "Distortion product otoacoustic emission (DPOAE) levels in response to primary pairs (f2 = 2 or 4 kHz, L2 ranging from 20 to 60 dB SPL, L1=0.4L2+39dB) were measured with and without suppressor tones (f3), which varied from 1 octave below to 1/2 octave above f2, in normal-hearing subjects. Suppressor level (L3) varied from-5 to 85 dB SPL. DPOAE levels were converted into decrements by subtracting the level in the presence of the suppressor from the level in the absence of a suppressor. DPOAE decrement vs L3 functions showed steeper slopes when f32 and shallower slopes when f3>f2. This pattern is similar to other measurements of response growth, such as direct measures of basilar-membrane motion, single-unit rate-level functions, suppression of basilar-membrane motion, and discharge-rate suppression from lower animals. As L2 increased, the L3 necessary to maintain 3 dB of suppression increased at a rate of about 1 dB/dB when f3 was approximately equal to f2, but increased more slowly when f32. Functions relating L3 to L2 in order to maintain a constant 3-dB reduction in DPOAE level were compared for f32 and for f3≅f2 in order to derive an estimate related to {"}cochlear-amplifier gain.{"} These results were consistent with the view that {"}cochlear gain{"} is greater at lower input levels, decreasing as level increases.",
author = "Gorga, {Michael P} and Neely, {Stephen T} and Dorn, {Patricia A.} and Dawn Konrad-Martin",
year = "2002",
month = "1",
day = "1",
doi = "10.1121/1.1426372",
language = "English (US)",
volume = "111",
pages = "271--284",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "1",

}

TY - JOUR

T1 - The use of distortion product otoacoustic emission suppression as an estimate of response growth

AU - Gorga, Michael P

AU - Neely, Stephen T

AU - Dorn, Patricia A.

AU - Konrad-Martin, Dawn

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Distortion product otoacoustic emission (DPOAE) levels in response to primary pairs (f2 = 2 or 4 kHz, L2 ranging from 20 to 60 dB SPL, L1=0.4L2+39dB) were measured with and without suppressor tones (f3), which varied from 1 octave below to 1/2 octave above f2, in normal-hearing subjects. Suppressor level (L3) varied from-5 to 85 dB SPL. DPOAE levels were converted into decrements by subtracting the level in the presence of the suppressor from the level in the absence of a suppressor. DPOAE decrement vs L3 functions showed steeper slopes when f32 and shallower slopes when f3>f2. This pattern is similar to other measurements of response growth, such as direct measures of basilar-membrane motion, single-unit rate-level functions, suppression of basilar-membrane motion, and discharge-rate suppression from lower animals. As L2 increased, the L3 necessary to maintain 3 dB of suppression increased at a rate of about 1 dB/dB when f3 was approximately equal to f2, but increased more slowly when f32. Functions relating L3 to L2 in order to maintain a constant 3-dB reduction in DPOAE level were compared for f32 and for f3≅f2 in order to derive an estimate related to "cochlear-amplifier gain." These results were consistent with the view that "cochlear gain" is greater at lower input levels, decreasing as level increases.

AB - Distortion product otoacoustic emission (DPOAE) levels in response to primary pairs (f2 = 2 or 4 kHz, L2 ranging from 20 to 60 dB SPL, L1=0.4L2+39dB) were measured with and without suppressor tones (f3), which varied from 1 octave below to 1/2 octave above f2, in normal-hearing subjects. Suppressor level (L3) varied from-5 to 85 dB SPL. DPOAE levels were converted into decrements by subtracting the level in the presence of the suppressor from the level in the absence of a suppressor. DPOAE decrement vs L3 functions showed steeper slopes when f32 and shallower slopes when f3>f2. This pattern is similar to other measurements of response growth, such as direct measures of basilar-membrane motion, single-unit rate-level functions, suppression of basilar-membrane motion, and discharge-rate suppression from lower animals. As L2 increased, the L3 necessary to maintain 3 dB of suppression increased at a rate of about 1 dB/dB when f3 was approximately equal to f2, but increased more slowly when f32. Functions relating L3 to L2 in order to maintain a constant 3-dB reduction in DPOAE level were compared for f32 and for f3≅f2 in order to derive an estimate related to "cochlear-amplifier gain." These results were consistent with the view that "cochlear gain" is greater at lower input levels, decreasing as level increases.

UR - http://www.scopus.com/inward/record.url?scp=0036146723&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036146723&partnerID=8YFLogxK

U2 - 10.1121/1.1426372

DO - 10.1121/1.1426372

M3 - Article

VL - 111

SP - 271

EP - 284

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 1

ER -