fly-brainloss — How Much Brain Does a Fly Need?

Removes 0 to 95 percent of the cells at random from a 165,122-neuron MaleCNS v1.0 model and asks which abilities fade first. Feeding halves at about 17 percent of cells gone, turning away from a side shadow at 55 percent, tracking a moving dot at 83 percent, while takeoff from a looming shadow and the head-touch response never halve at all. The order is the same on FlyWire's female brain. A FlyWire finding that deleting one or two PVLP069 cells releases shadow suppression of feeding did not reproduce here: none of 208 neurons tested singly did it, and 35 LC4/LPLC2 targets were needed.

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#ablation#lesion#controls#negative-result#lif#russian#malecns