ConnectomeFly 🪰 — a FlyWire-derived circuit in your browser

2 min read Original article ↗
Every fly runs a live …-neuron simulation wired from FlyWire data. Move your cursor at one to make it flee.

🪰 3 CPU

Camera frames stay in your browser. The simulated brains receive computed motion inputs, not the raw video.

Not an LLM: each fly runs a live 668-neuron model in your browser, built on wiring mapped from a real fruit-fly brain.

What's biological, and what's modeled?

FlyWire mapped brain wiring from electron-microscope images. This site uses a selected 668-neuron circuit—not the whole brain.

Spikes and physiology are software models adapted from DesktopFly. The simulated brains receive computed inputs from the cursor, clicks, food and camera motion—not raw sensory data.

SQUASH sends a large simulated nociceptive input through the circuit, then stops that fly's simulation instance. It does not show that the simulation is conscious or feels pain.

👁 Computed visual input

🧠 Modeled command-neuron activity

⚠ Run the SQUASH simulation?

SQUASH sends a large simulated nociceptive input through the circuit, creating a burst of modeled activity, then stops that fly's simulation instance.

The wiring comes from biological data, but the activity and stimulus are software. This does not show that anything is conscious or feels pain.

You can still bump a fly without running SQUASH by tapping it with the guard down.