Fly Connectome on a GPU

A FlyWire whole-brain model, 138,639 neurons and 15 million connections, rewritten as custom CUDA kernels so one second of brain time takes about 0.02-0.06 s on a laptop RTX 4070, then given senses and a NeuroMechFly body. The authors report that the original model runs away: 5 Hz into one olfactory glomerulus leaves 8,162 neurons active, which they damp with synaptic fatigue and slow adaptation. Conditioning on its 62,261 KC-to-MBON connections gives +11.4 ± 1.9 Hz in 10 of 10 flies against +0.3 Hz unpaired, but they state the memory never reaches the steering.

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#flywire#cuda#neuromechfly#mushroom-body#runaway-activity#negative-result