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Linear homeomorphic models for muscles in the head-neck region
Daniel A Sierra1, John D Enderle
1Biomedical Engineering Program, University of Connecticut, Room 217, A.B. Bronwell Building, 260 Glenbrook Road, Unit 2247, Storrs, CT 06269-2247, USA.
Annals of Biomedical Engineering
|December 4, 2009
Summary
Researchers adapted a linear muscle model for head and neck muscles to simulate gaze shifts. This model accurately reflects muscle dynamics, aiding studies on neural control during fast head and eye movements.
Area of Science:
- Biomechanics
- Neuroscience
- Computational Modeling
Background:
- The rectus eye muscle model by Enderle et al. is a linear homeomorphic model.
- Understanding head-neck complex dynamics is crucial for studying gaze control.
Purpose of the Study:
- To adapt the Enderle et al. linear homeomorphic muscle model for head-neck muscles.
- To parameterize these models for use in a 3D dynamic computer simulation of the head-neck complex.
- To investigate neural control during gaze shifts and saccades.
Main Methods:
- Parameterization of linear homeomorphic muscle models using simulated annealing.
- Fitting models to muscles within the head-neck complex involved in gaze shifts.
- Utilizing a 3D dynamic computer model incorporating bony structures and soft tissues.
Main Results:
- Obtained parameter values for various neck muscles.
- Linear homeomorphic models demonstrated non-linear force-velocity and linear length-tension profiles.
- Model outputs align with results from the more complex Virtual Muscle model.
Conclusions:
- The parameterized linear homeomorphic muscle models effectively represent head-neck muscle dynamics.
- These models are suitable for driving 3D simulations of head-neck complex movements.
- The approach supports research into neural control mechanisms for gaze shifts.
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