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BP: Fachverband Biologische Physik
BP 14: Poster Session II
BP 14.68: Poster
Dienstag, 10. März 2026, 18:00–21:00, P2
Revealing Temporal Hierachy in Larval Zebrafish Behaviour and Its Neuronal Representation — •Leonard Constien1, Gautam Sridhar2, Joao C. Marques3, Drew N. Robson3, Jennifer M. Li3, Antonio C. Costa1, and Claire Wyart1 — 1Paris Brain Institute (Institut du Cerveau), Sorbonne University, INSERM U1127, CNRS UMR 7225, Paris, France — 2Okinawa Institute of Science and Technology 1919-1 Tancha, Onna-son, Kunigami-gun Okinawa, Japan 904-0495 — 3Max-Planck-Institut für biologische Kybernetik, Tubingen, Germany.
On a given timescale, animal behaviour can be structured into behavioural states, each defined by a similarity of kinematics, immediate goals and physiological states. Further, coarse behavioural state divide into substates, unfolding on faster timescales. How are these states represented in the brain and which structures control their dynamics across timescales? To address these questions, we apply a Markov chain analysis framework to a dataset of larval zebrafish behaviour with parallel recording of whole-brain activity at cellular resolution. The approach identifies behavioural states in a principled and unbiased manner and reveals a hierarchical organization of hunting behaviour from the seconds to minutes timescale. Further, by applying the framework independently on neuronal activity, we reveal a similar structure of the dynamics, identify representing brain regions and investigate the links to behaviour. This work will motivate further studies to determine the circuits and mechanisms behind the regulation of behavioural dynamics.
Keywords: Zebrafish; Behavioural Dynamics; Hierachy; Markov Chain; Neuroscience