flybrain

A whole fruit fly brain, all 139,255 neurons, simulated live in your browser. Pick something to happen to the fly and watch what its brain makes it do.

0.00 s of fly time, 0 neurons firing

Watch the fly play a game: its brain steers, dodges and fires

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Build your own

Search a cell type (try LPLC2, DNp01, JO-E) or click a neuron, then stimulate or silence it. Watch the fly on the right.

Stimulus strength 150 Hz Stimulus on Which neurons excite and which inhibit

Connectome: FlyWire v783, Dorkenwald et al. 2024 (CC BY 4.0). Cell types and positions: Schlegel et al. 2024 (CC BY 4.0). Model: Shiu et al. 2024, leaky integrate-and-fire (MIT). Behaviours are read from the named neurons' firing rates.