Social interactions in medaka fish depend on discrete kinematic states of swimming behavior

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Discrete modes of social information processing predict individual behavior of fish in a group Proc. Natl. Acad. Sci. USA. 2017; 114 :10149-10154 Crossref Scopus (37) PubMed Google Scholar , 18 18. Bod’ová, K. ∙ Mitchell, G.J. ∙ Harpaz, R. ... Probabilistic models of individual and collective animal behavior PLoS One. 2018; 13 , e0193049 Crossref Scopus (21) PubMed Google Scholar we tested how medaka translate social information from neighbors into actions across these kinematic states. The models revealed distinct computations governing social information processing and movement responses in each state. Moreover, social responsiveness varied significantly between states: it was strongest during constant-speed epochs, intermediate during accelerations, and lowest during decelerations. These findings highlight discrete behavioral modes as key modulators of social interaction computations underlying collective behavior.