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  Anatomically-based skeleton kinetics and pose estimation in freely-moving rodents

Monsees, A., Voit, K.-M., Wallace, D., Sawinski, J., Leks, E., Scheffler, K., et al. (submitted). Anatomically-based skeleton kinetics and pose estimation in freely-moving rodents.

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 Creators:
Monsees, A, Author
Voit, K-M, Author
Wallace, DJ, Author              
Sawinski, J, Author
Leks, E1, 2, Author              
Scheffler, K1, 2, Author              
Macke, JH, Author              
Kerr, JND, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Forming a complete picture of the relationship between neural activity and body kinetics requires quantification of skeletal joint biomechanics during behavior. However, without detailed knowledge of the underlying skeletal motion, inferring joint kinetics from surface tracking approaches is difficult, especially for animals where the relationship between surface anatomy and skeleton changes during motion. Here we developed a videography-based method enabling detailed three-dimensional kinetic quantification of an anatomically defined skeleton in untethered freely-behaving animals. This skeleton-based model has been constrained by anatomical principles and joint motion limits and provided skeletal pose estimates for a range of rodent sizes, even when limbs were occluded. Model-inferred joint kinetics for both gait and gap-crossing behaviors were verified by direct measurement of limb placement, showing that complex decision-making behaviors can be accurately reconstructed at the level of skeletal kinetics using our anatomically constrained model.

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 Dates: 2021-11
 Publication Status: Submitted
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1101/2021.11.03.466906
 Degree: -

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