Middle-ear models (6 of 49)

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1.1 Electrical-mechanical-acoustical analogies

1.1 Electrical-mechanical-acoustical analogies (cont'd)

1.2 Middle-ear circuit models

1.2 Middle-ear circuit models (cont'd)

1.2 Middle-ear circuit models (cont'd)

6 of 49

2. Finite-element method

2. Finite-element method (cont'd)

2. Finite-element method (cont'd)

3.1 Model parameters

3.1 Model parameters (cont'd)

3.2 Low-frequency simulation results

3.2 Low-frequency simulation results (cont'd)

3.2 Low-frequency simulation results (cont'd)

3.2 Low-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results

3.3 Higher-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results (cont'd)

3.3 Higher-frequency simulation results (cont'd)

3.4.1 Effects of parameter variations

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.1 Effects of parameter variations (cont'd)

3.4.2 Effects of asymmetry

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.2 Effects of asymmetry (cont'd)

3.4.3 Wave propagation

3.4.3 Wave propagation (cont'd)

3.4.3 Wave propagation (cont'd)

4. Modelling of ossicles and ligaments

4.1 Bending of manubrium

4.2 Incus/stapes coupling

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

4.2 Incus/stapes coupling (cont'd)

5. Non-linear viscoelasticity

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

5. Non-linear viscoelasticity (cont'd)

6. Simulation-based inference

6. Simulation-based inference (cont'd)

1.3 Problems with lumped models

Lack of direct connection between parameter values and anatomical or physiological properties.

For example:

moment of inertia changes if axis of rotation changes
mass parameter for stapes changes if its mode of vibration changes
eardrum parameters change if its vibration pattern changes

After http://xkcd.com/730/

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BMDE-501 Modelling middle-ear mechanics

Last modified: 2024-10-21 12:43:04

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