The circuit, neuron by neuron

155 neurons, 6,522 connections, 45,961 synapses, from FlyWire release 783. Every root ID below opens the real cell in FlyWire Codex.

How it was built

1. Take every neuron annotated EPG, EPGt, PEG, PEN_a, PEN_b or Delta7 in the FlyWire community annotations (Schlegel et al. 2024).
2. Sum the synapse counts between those neurons across all neuropils from the proofread connections table (Zenodo 10676866, sha256 24f960ae3e7d4f8c…).
3. Measure each neuron's angle on the ring from the positions of its own synapses inside the ellipsoid body: postsynaptic sites for EPG (their dendrites), presynaptic sites for PEG and PEN (their axons). 110,056 synapse coordinates from the 9.5 GB FlyWire synapse table. Bin into 16 wedges.
4. Pack into a byte table (types, wedges, sides, CSR synapse lists, root IDs), keccak256 it, store it as bytecode.

Geometry

anatomical: circular mean of each neuron's ellipsoid-body synapse positions (FlyWire synapse table), 50/51 EPG; wedges = 16 equal angular bins. Circuit table keccak256: 0xffbe0e7f28e1f0dd2cfaa01d1d221c502bf41c1fd519ebfe8d9b8203e7cedfc2.