The effect of methodological differences in the measurement of stapes motion in live and cadaver ears

Wade W Chien, Michael E. Ravicz, Saumil N. Merchant, John J. Rosowski

Research output: Contribution to journalArticle

Abstract

Methodological differences in sound-induced stapes velocity (Vs) measurements in live and cadaveric ears were examined using fresh cadaveric temporal bones. On average, differences in preparation (sectioning the stapedius tendon, removing the facial nerve, and widely opening the facial recess) had statistically insignificant effects on measured Vs. Differences in the achievable measurement angle (with respect to the axis of piston-like stapes motion) had a significant effect on measured Vs below 2 kHz. These results suggest that much if not all of the differences in Vs measurements between live and cadaveric ears can be explained by the differences in measurement angle between the two preparations. Measurement angle was found to have minimal effect on measured Vs above 2 kHz. This demonstrates that the commonly used method of estimating stapes translational velocity by dividing the measured velocity by the cosine of the measurement angle is not valid above 2 kHz.

Original languageEnglish (US)
Pages (from-to)183-197
Number of pages15
JournalAudiology and Neurotology
Volume11
Issue number3
DOIs
StatePublished - Apr 2006
Externally publishedYes

Fingerprint

Stapes
Cadaver
Ear
Stapedius
Temporal Bone
Facial Nerve
Tendons

Keywords

  • Human middle ear
  • Middle-ear function in live ears
  • Stapes velocity
  • Temporal bone studies

ASJC Scopus subject areas

  • Physiology
  • Otorhinolaryngology
  • Neuroscience(all)

Cite this

The effect of methodological differences in the measurement of stapes motion in live and cadaver ears. / Chien, Wade W; Ravicz, Michael E.; Merchant, Saumil N.; Rosowski, John J.

In: Audiology and Neurotology, Vol. 11, No. 3, 04.2006, p. 183-197.

Research output: Contribution to journalArticle

Chien, Wade W ; Ravicz, Michael E. ; Merchant, Saumil N. ; Rosowski, John J. / The effect of methodological differences in the measurement of stapes motion in live and cadaver ears. In: Audiology and Neurotology. 2006 ; Vol. 11, No. 3. pp. 183-197.
@article{82b94c4fd2114441a1c30be121072d55,
title = "The effect of methodological differences in the measurement of stapes motion in live and cadaver ears",
abstract = "Methodological differences in sound-induced stapes velocity (Vs) measurements in live and cadaveric ears were examined using fresh cadaveric temporal bones. On average, differences in preparation (sectioning the stapedius tendon, removing the facial nerve, and widely opening the facial recess) had statistically insignificant effects on measured Vs. Differences in the achievable measurement angle (with respect to the axis of piston-like stapes motion) had a significant effect on measured Vs below 2 kHz. These results suggest that much if not all of the differences in Vs measurements between live and cadaveric ears can be explained by the differences in measurement angle between the two preparations. Measurement angle was found to have minimal effect on measured Vs above 2 kHz. This demonstrates that the commonly used method of estimating stapes translational velocity by dividing the measured velocity by the cosine of the measurement angle is not valid above 2 kHz.",
keywords = "Human middle ear, Middle-ear function in live ears, Stapes velocity, Temporal bone studies",
author = "Chien, {Wade W} and Ravicz, {Michael E.} and Merchant, {Saumil N.} and Rosowski, {John J.}",
year = "2006",
month = "4",
doi = "10.1159/000091815",
language = "English (US)",
volume = "11",
pages = "183--197",
journal = "Audiology and Neuro-Otology",
issn = "1420-3030",
publisher = "S. Karger AG",
number = "3",

}

TY - JOUR

T1 - The effect of methodological differences in the measurement of stapes motion in live and cadaver ears

AU - Chien, Wade W

AU - Ravicz, Michael E.

AU - Merchant, Saumil N.

AU - Rosowski, John J.

PY - 2006/4

Y1 - 2006/4

N2 - Methodological differences in sound-induced stapes velocity (Vs) measurements in live and cadaveric ears were examined using fresh cadaveric temporal bones. On average, differences in preparation (sectioning the stapedius tendon, removing the facial nerve, and widely opening the facial recess) had statistically insignificant effects on measured Vs. Differences in the achievable measurement angle (with respect to the axis of piston-like stapes motion) had a significant effect on measured Vs below 2 kHz. These results suggest that much if not all of the differences in Vs measurements between live and cadaveric ears can be explained by the differences in measurement angle between the two preparations. Measurement angle was found to have minimal effect on measured Vs above 2 kHz. This demonstrates that the commonly used method of estimating stapes translational velocity by dividing the measured velocity by the cosine of the measurement angle is not valid above 2 kHz.

AB - Methodological differences in sound-induced stapes velocity (Vs) measurements in live and cadaveric ears were examined using fresh cadaveric temporal bones. On average, differences in preparation (sectioning the stapedius tendon, removing the facial nerve, and widely opening the facial recess) had statistically insignificant effects on measured Vs. Differences in the achievable measurement angle (with respect to the axis of piston-like stapes motion) had a significant effect on measured Vs below 2 kHz. These results suggest that much if not all of the differences in Vs measurements between live and cadaveric ears can be explained by the differences in measurement angle between the two preparations. Measurement angle was found to have minimal effect on measured Vs above 2 kHz. This demonstrates that the commonly used method of estimating stapes translational velocity by dividing the measured velocity by the cosine of the measurement angle is not valid above 2 kHz.

KW - Human middle ear

KW - Middle-ear function in live ears

KW - Stapes velocity

KW - Temporal bone studies

UR - http://www.scopus.com/inward/record.url?scp=33645974549&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645974549&partnerID=8YFLogxK

U2 - 10.1159/000091815

DO - 10.1159/000091815

M3 - Article

C2 - 16514236

AN - SCOPUS:33645974549

VL - 11

SP - 183

EP - 197

JO - Audiology and Neuro-Otology

JF - Audiology and Neuro-Otology

SN - 1420-3030

IS - 3

ER -