scholarly journals Sound pressure distributions and resonances in the human ear canal in the presence of a measuring microphone

1984 ◽  
Vol 75 (S1) ◽  
pp. S11-S11 ◽  
Author(s):  
George F. Kuhn ◽  
Larry D. Greller
Keyword(s):  
Sound Pressure ◽  
Ear Canal ◽  
Pressure Distributions ◽  
Human Ear

The spatial distribution of sound pressure within the human ear canal

2005 ◽  
Vol 117 (4) ◽  
pp. 2564-2564
Author(s):  
Michael R. Stinson ◽  
Gilles A. Daigle
Keyword(s):  
Spatial Distribution ◽  
Sound Pressure ◽  
Ear Canal ◽  
Human Ear

Directional sensitivity of sound‐pressure levels in the human ear canal

1989 ◽  
Vol 86 (1) ◽  
pp. 89-108 ◽  
Author(s):  
John C. Middlebrooks ◽  
James C. Makous ◽  
David M. Green
Keyword(s):  
Sound Pressure ◽  
Directional Sensitivity ◽  
Ear Canal ◽  
Sound Pressure Levels ◽  
Human Ear

scholarly journals Sound pressure distribution in the human ear canal

1983 ◽  
Vol 73 (S1) ◽  
pp. S59-S60 ◽  
Author(s):  
M. R. Stinson ◽  
E. A. G. Shaw
Keyword(s):  
Pressure Distribution ◽  
Sound Pressure ◽  
Ear Canal ◽  
Human Ear

The Occlusion Effect in Bone Conduction Hearing

1965 ◽  
Vol 8 (2) ◽  
pp. 137-148 ◽  
Author(s):  
David P. Goldstein ◽  
Claude S. Hayes
Keyword(s):  
Sound Pressure Level ◽  
Sound Pressure ◽  
Bone Conduction ◽  
Pressure Level ◽  
Ear Canal ◽  
Significant Difference ◽  
Threshold Measure ◽  
Level Shifts ◽  
Positive Correlations ◽  
Occlusion Effect

This experiment tested the hypothesis that the occlusion effect is accompanied by an increase in sound pressure level in the external auditory canal. Pure tone bone conduction thresholds and sound pressure levels were measured, first with the ear canal open, then with the ear canal closed, at two positions of the bone vibrator and at five frequencies in 28 normal listeners. Statistical analyses revealed a significant difference between measures at 250, 500, and 1 000 cps but not at 2 000 and 4 000 cps. Average sound pressure level shifts tended to be larger than their threshold measure counterparts. The two measures, nevertheless, yielded positive correlations.

Probe-Tube Microphone Measures of Ear-Canal Sound Pressure Levels in Infants and Children

1989 ◽  
Vol 10 (4) ◽  
pp. 254-258 ◽  
Author(s):  
Judith A. Feigin ◽  
Judy G. Kopun ◽  
Patricia G. Stelmachowicz ◽  
Michael P. Gorga
Keyword(s):  
Sound Pressure ◽  
Infants And Children ◽  
Ear Canal ◽  
Sound Pressure Levels ◽  
In Infants And Children

3D Finite Element Modeling of Blast Wave Transmission From the External Ear to a Spiral Cochlea

2021 ◽  
Author(s):  
Marcus Brown ◽  
John Bradshaw ◽  
Rong Z. Gan
Keyword(s):  
Finite Element ◽  
Middle Ear ◽  
Basilar Membrane ◽  
Transverse Motion ◽  
Fe Model ◽  
Ear Canal ◽  
Blast Overpressure ◽  
Stapes Footplate ◽  
Human Ear ◽  
Temporal Bones

Abstract Blast-induced injuries affect the health of veterans, in which the auditory system is often damaged, and blast-induced auditory damage to the cochlea is difficult to quantify. A recent study modeled blast overpressure (BOP) transmission throughout the ear utilizing a straight, two-chambered cochlea, but the spiral cochlea's response to blast exposure has yet to be investigated. In this study, we utilized a human ear finite element (FE) model with a spiraled, two-chambered cochlea to simulate the response of the anatomical structural cochlea to BOP exposure. The FE model included an ear canal, middle ear, and two and half turns of two-chambered cochlea and simulated a BOP from the ear canal entrance to the spiral cochlea in a transient analysis utilizing fluid-structure interfaces. The model's middle ear was validated with experimental pressure measurements from the outer and middle ear of human temporal bones. The results showed high stapes footplate displacements up to 28.5µm resulting in high intracochlear pressures and basilar membrane (BM) displacements up to 43.2µm from a BOP input of 30.7kPa. The cochlea's spiral shape caused asymmetric pressure distributions as high as 4kPa across the cochlea's width and higher BM transverse motion than that observed in a similar straight cochlea model. The developed spiral cochlea model provides an advancement from the straight cochlea model to increase the understanding of cochlear mechanics during blast and progresses towards a model able to predict potential hearing loss after blast.

Sign in / Sign up

Export Citation Format

Share Document