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How the Eon Team Produced a Virtual Embodied Fly details Eon's work on integrating a simulated fly brain with a virtual body. It provides a technical deep dive into combining connectome data, brain models, and neuromechanical simulations for advanced biological simulation.
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This article from Eon Systems PBC provides a technical overview of their project to create a virtual embodied fly. The team integrated an adult fly connectome, connectome-constrained brain models, and neuromechanical fly body models to simulate a virtual fly's behavior. The system uses a leaky integrate-and-fire (LIF) model of the Drosophila central-brain connectome, combined with a visual model and the NeuroMechFly virtual body, which features 87 independent joints and runs on the MuJoCo physics engine. The article details how sensory inputs (taste, touch, olfaction, vision) are mapped to neurons, how brain activity controls the body through descending neurons, and demonstrates behaviors like grooming, feeding, and foraging. It also discusses the limitations of the current model, such as simplified neuron dynamics and the absence of internal state or plasticity, positioning the embodied fly as a research and demonstration platform.
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