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

MPS-Authors
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Monsees,  Arne       
Department of Behavior and Brain Organization, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;
International Max Planck Research School (IMPRS) for Brain and Behavior, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;

/persons/resource/persons248533

Voit,  Kay-Michael
Department of Behavior and Brain Organization, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;

/persons/resource/persons84296

Wallace,  Damian J       
Department of Behavior and Brain Organization, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;

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Sawinski,  Jürgen       
Department of Behavior and Brain Organization, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;

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Leks,  Edyta       
External Organizations;
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Macke,  Jakob H       
Max Planck Research Group Neural Systems Analysis, Center of Advanced European Studies and Research (caesar), Max Planck Society;

/persons/resource/persons84010

Kerr,  Jason N. D.       
Department of Behavior and Brain Organization, Max Planck Institute for Neurobiology of Behavior – caesar, Max Planck Society;

External Resource

https://www.biorxiv.org/content/10.1101/2021.11.03.466906v2
(Preprint)

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Citation

Monsees, A., Voit, K.-M., Wallace, D. J., Sawinski, J., Leks, E., Scheffler, K., et al. (2021). Anatomically-based skeleton kinetics and pose estimation in freely-moving rodents. bioRxiv: the preprint server for biology, 466906. doi:10.1101/2021.11.03.466906.


Cite as: https://hdl.handle.net/21.11116/0000-0009-791C-1
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.