Results 311 to 320 of about 1,994,891 (358)

Homodyne interferometer for basilar membrane measurements

Hearing Research, 1986
Techniques available for measuring the mechanical response of the inner ear are compared. These include capacitive probe, Mössbauer and interferometric methods. The theory of a homodyne interferometer utilized for inner ear measurements is given. Experimental apparatus built to test the interferometer performance is described. Experimental results show
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An integrable model for the basilar membrane

The Journal of the Acoustical Society of America, 1973
Assuming a logarithmic relationship between place and characteristic frequency, proportionality between the latter and phase velocity, and a loss factor independent of place, the wave equation for the basilar membrane displacement can be integrated analytically.
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Structural implications of basilar membrane compliance measurements

The Journal of the Acoustical Society of America, 1985
Static point-load measurements of basilar membrane compliance were made in the basal region of the excised guinea pig cochlea. Points on a radial line across the basilar membrane were displaced in one-half micron increments and the force required to maintain each increment recorded.
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Digital Simulation of Basilar-Membrane Motion

The Journal of the Acoustical Society of America, 1962
In previous work, a computational model was derived for describing basilar-membrane displacement in the human ear. The model specifies membrane displacement at arbitrary points for known sound pressure at the eardrum. Its mathematical tractability makes it an attractive tool for digital analysis of speech and other auditory signals.
James L. Flanagan, Carol M. Bird, A. Dickeson Hause   +2 more
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Analog Simulation of the Basilar Membrane

The Journal of the Acoustical Society of America, 1962
An analog-computer simulation of the mechanical action of the basilar membrane has been performed which results in a closer approximation to the Békésy experimental data than is feasible by a numerical evaluation approach. Confirmation of the results of Flanagan pertaining to pitch perception has been obtained.
John F. Hemdal, George W. Hughes
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[Basilar membrane nonlinearity].

Biofizika, 1976
The nonlinear correction of the cochlear partitions movement equation becomes the main part in the resonant section. In the neighbourhood of this section the periodic solution, having the drawing force frequency omega, gets the region of the non-stability in the interval (see abstract), where a is the vibration amplitude and h is the basilar membrane ...
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Mechanical responses of the basilar membrane.

The Journal of the Acoustical Society of America, 1996
The traveling-wave activity that Georg von Békésy studied in the cochlea early in this century has been of intense interest to physiologists and mathematical modelers over the last 30 years. This interest was nurtured by the discovery that the mechanical responses of the basilar membrane are nonlinear at relatively low sound levels and that the ...
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Damage of the basilar membrane by acoustic stimulation

Archives of Oto-Rhino-Laryngology, 1981
Sound exposures of more than 130 dB lead to typical tears in the basilar membrane in the area of maximal damage. The position, size, and number of these tears are evaluated.
H, Rauchegger, H, Spoendlin
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Travelling Wave Motion along the Pigeon Basilar Membrane

ORL, 1986
The basilar membrane (BM) motion in the pigeon was measured using the Mössbauer technique. Tonotopic frequency mapping and travelling wave motion were observed over the basal 35% of the BM. The sensitivity and sharpness of the BM tuning depended on the physiological condition of the cochlea.
J W, Smolders, A W, Gummer, R, Klinke
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Basilar membrane motion in a spiral-shaped cochlea

The Journal of the Acoustical Society of America, 1978
To examine the influence of the spiral coiling of the cochlear upon the motion of the basilar membrane, a mathematical model of the cochlea is constructed. The formulation of the problem leads to Laplace’s equation in three dimensions in a curvilinear coordinate system plus corresponding boundary conditons. By basing the choice of the coordinate system
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