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Characterizing Behavioral Dynamics in Bipolar Disorder with Computational Ethology

Zhang, Z.; Chou, C. K.; Rosberg, H.; Perry, W.; Young, J. W.; Minassian, A.; Mishne, G.; Aoi, M.

2024-11-15 psychiatry and clinical psychology
10.1101/2024.11.14.24317348 medRxiv
Show abstract

Recent technologies for quantifying behavior have revolutionized animal studies in social, cognitive, and pharmacological neurosciences. However, comparable studies in understanding human behavior, especially in psychiatry, are lacking. In this study, we utilized data-driven machine learning to analyze natural, spontaneous open-field human behaviors in people with euthymic bipolar disorder (BD) and non-BD participants. Our computational paradigm identified representations of distinct sets of actions (motifs) that capture the physical activities of both groups of participants. We propose novel measures for quantifying dynamics, variability, and stereotypy in BD behaviors. These fine-grained behavioral features reflect patterns of cognitive functions of BD and better predict BD compared with traditional ethological and psychiatric measures and action recognition approaches. This research represents a significant computational advancement in human ethology, enabling the quantification of complex behaviors in real-world conditions and opening new avenues for characterizing neuropsychiatric conditions from behavior.

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