High-throughput markerless pose estimation and home-cage activity analysis of tree shrew using deep learning.

Q1 Health Professions Animal models and experimental medicine Pub Date : 2025-01-23 DOI:10.1002/ame2.12530

Yangzhen Wang, Feng Su, Rixu Cong, Mengna Liu, Kaichen Shan, Xiaying Li, Desheng Zhu, Yusheng Wei, Jiejie Dai, Chen Zhang, Yonglu Tian

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Abstract

Background: Quantifying the rich home-cage activities of tree shrews provides a reliable basis for understanding their daily routines and building disease models. However, due to the lack of effective behavioral methods, most efforts on tree shrew behavior are limited to simple measures, resulting in the loss of much behavioral information.

Methods: To address this issue, we present a deep learning (DL) approach to achieve markerless pose estimation and recognize multiple spontaneous behaviors of tree shrews, including drinking, eating, resting, and staying in the dark house, etc. RESULTS: This high-throughput approach can monitor the home-cage activities of 16 tree shrews simultaneously over an extended period. Additionally, we demonstrated an innovative system with reliable apparatus, paradigms, and analysis methods for investigating food grasping behavior. The median duration for each bout of grasping was 0.20 s.

Conclusion: This study provides an efficient tool for quantifying and understand tree shrews' natural behaviors.

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