Measurements of the guinea pig middle ear transfer characteristic

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The middle ear transfer characteristic, defined here as the ratio of stapedial footplate displacement to constant sound pressure at the tympanic membrane, was determined for the anesthetized guinea pig with the aid of an electromechanical vibrator which applied displacement directly to the stapes. Magnitude and phase of the cochlear microphonic potential from the first cochlear turn were used as a common reference, first with the middle ear intact and later with the vibrator substituted for the middle ear. Under the assumption that the open bulla middle ear has a second order low pass transfer characteristic, the data were simulated best by an overdamped system having breakpoint frequencies at 184 and 1358 Hz and a low frequency transfer ratio of 6.16 x 10-7 m3/N. Closing the bulla results in a change in the low frequency transfer ratio of -15 to -20 dB and a shift of the breakpoints to higher frequencies.

Original languageEnglish (US)
Pages (from-to)1231-1238
Number of pages8
JournalJournal of the Acoustical Society of America
Volume56
Issue number4
StatePublished - 1974
Externally publishedYes

Fingerprint

middle ear
guinea pigs
low frequencies
closing
sound pressure
membranes
Guinea
Middle Ear
Pig
shift

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Measurements of the guinea pig middle ear transfer characteristic. / Nuttall, Alfred.

In: Journal of the Acoustical Society of America, Vol. 56, No. 4, 1974, p. 1231-1238.

Research output: Contribution to journalArticle

@article{df4e5f196fcf410bb1d3372e939f6d01,
title = "Measurements of the guinea pig middle ear transfer characteristic",
abstract = "The middle ear transfer characteristic, defined here as the ratio of stapedial footplate displacement to constant sound pressure at the tympanic membrane, was determined for the anesthetized guinea pig with the aid of an electromechanical vibrator which applied displacement directly to the stapes. Magnitude and phase of the cochlear microphonic potential from the first cochlear turn were used as a common reference, first with the middle ear intact and later with the vibrator substituted for the middle ear. Under the assumption that the open bulla middle ear has a second order low pass transfer characteristic, the data were simulated best by an overdamped system having breakpoint frequencies at 184 and 1358 Hz and a low frequency transfer ratio of 6.16 x 10-7 m3/N. Closing the bulla results in a change in the low frequency transfer ratio of -15 to -20 dB and a shift of the breakpoints to higher frequencies.",
author = "Alfred Nuttall",
year = "1974",
language = "English (US)",
volume = "56",
pages = "1231--1238",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "4",

}

TY - JOUR

T1 - Measurements of the guinea pig middle ear transfer characteristic

AU - Nuttall, Alfred

PY - 1974

Y1 - 1974

N2 - The middle ear transfer characteristic, defined here as the ratio of stapedial footplate displacement to constant sound pressure at the tympanic membrane, was determined for the anesthetized guinea pig with the aid of an electromechanical vibrator which applied displacement directly to the stapes. Magnitude and phase of the cochlear microphonic potential from the first cochlear turn were used as a common reference, first with the middle ear intact and later with the vibrator substituted for the middle ear. Under the assumption that the open bulla middle ear has a second order low pass transfer characteristic, the data were simulated best by an overdamped system having breakpoint frequencies at 184 and 1358 Hz and a low frequency transfer ratio of 6.16 x 10-7 m3/N. Closing the bulla results in a change in the low frequency transfer ratio of -15 to -20 dB and a shift of the breakpoints to higher frequencies.

AB - The middle ear transfer characteristic, defined here as the ratio of stapedial footplate displacement to constant sound pressure at the tympanic membrane, was determined for the anesthetized guinea pig with the aid of an electromechanical vibrator which applied displacement directly to the stapes. Magnitude and phase of the cochlear microphonic potential from the first cochlear turn were used as a common reference, first with the middle ear intact and later with the vibrator substituted for the middle ear. Under the assumption that the open bulla middle ear has a second order low pass transfer characteristic, the data were simulated best by an overdamped system having breakpoint frequencies at 184 and 1358 Hz and a low frequency transfer ratio of 6.16 x 10-7 m3/N. Closing the bulla results in a change in the low frequency transfer ratio of -15 to -20 dB and a shift of the breakpoints to higher frequencies.

UR - http://www.scopus.com/inward/record.url?scp=0016289984&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0016289984&partnerID=8YFLogxK

M3 - Article

C2 - 4425227

AN - SCOPUS:0016289984

VL - 56

SP - 1231

EP - 1238

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 4

ER -