Mechanical passive and active models of the human basilar membrane

Skrodzka, Ewa

doi:10.1016/j.apacoust.2005.04.006

Cited by 10 publications

(2 citation statements)

References 28 publications

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“…Following the studies of von Békésy ͑1960͒, there have been a large number of studies that have emphasized components of this stiffness gradient; for example, geometry ͑Gummer et Miller, 1985;Steele, 1987Steele, , 1999Olson and Mountain, 1991;Wada et al, 1998;Emadi et al, 2004͒, boundary conditions ͑Gummer et al, 1981Steele, 1987;Olson and Mountain, 1991;Brass, 2000;Homer et al, 2004;de La Rochefoucauld and Olson, 2007;Liu andWhite, 2008͒, andelastic material properties ͑Voldřich, 1978;Miller, 1985;Steele, 1987Steele, , 1999Olson and Mountain, 1994;Mountain, 1998b, 2007;Wada et al, 1998;Skrodzka, 2005;Liu and White, 2008͒. However, none of these has attempted a complete model of the elastic properties of the BM.…”

Section: Introductionmentioning

confidence: 98%

Compliance profiles derived from a three-dimensional finite-element model of the basilar membrane

Fleischer

Schmidt

Gummer

2010

The Journal of the Acoustical Society of America

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A finite-element analysis is used to explore the impact of elastic material properties, boundary conditions, and geometry, including coiling, on the spatial characteristics of the compliance of the unloaded basilar membrane (BM). It is assumed that the arcuate zone is isotropic and the pectinate zone orthotropic, and that the radial component of the effective Young's modulus in the pectinate zone decreases exponentially with distance from base to apex. The results concur with tonotopic characteristics of compliance and neural data. Moreover, whereas the maximum compliance in a radial profile is located close to the boundary between the two zones in the basal region, it shifts to the midpoint of the pectinate zone for the apical BM; the width of the profile also expands. This shift begins near the 1 kHz characteristic place for guinea pig and the 2.4 kHz place for gerbil. Shift and expansion are not observed for linear rather than exponential decrease of the radial component of Young's modulus. This spatial change of the compliance profile leads to the prediction that mechanical excitation in the apical region of the organ of Corti is different to that in the basal region.

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Section: Introductionmentioning

confidence: 98%

Compliance profiles derived from a three-dimensional finite-element model of the basilar membrane

Fleischer

Schmidt

Gummer

2010

The Journal of the Acoustical Society of America

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show abstract

“…However, observation of the entire vibration of the BM under physiological conditions is difficult because the bony wall of the cochlea surrounds the BM. To estimate the vibration of the BM under physiological conditions in detail, some theoretical studies have investigated the vibration of the BM using the WentzeleKramerseBrillouin (WKB) method (Steele and Taber, 1979;Lim and Steele, 2002;Yoon et al, 2007) or the finite-element method (Böhnke and Arnold, 1999;Manoussaki and Chadwick, 2000;Parthasarathi et al, 2000;Andoh et al, 2005;Skrodzka, 2005;Ramamoorthy et al, 2007;Meaud and Grosh, 2010;Fleischer et al, 2010).…”

Section: Introductionmentioning

confidence: 99%