FLYMINDREFINE THE SELECTED FAMILYKenyon cells
Filters apply to the family selected in the atlas above. Some combinations may return no cells.
Transmitter labels are predictions, not a guarantee of a cell’s effect on every partner.
UNDER THE HEADPHONES / BRAIN EXPLORER
Synapse Lab.
Rotate the brain. Pick a region. Meet the neurons behind the fly.
“all this wiring.
still buys the top.”
FAFB · FLYWIRE / 3D BRAINLOADING 3D
Loading real FlyWire brain surfaces…
Click a colored region to see its details.
Drag to rotate · Click a region · Pinch or scroll to zoom.
Keyboard: arrows rotate; + / − zoom. Use the selector to reach inner regions.
Original 2D reference · optional 8-second preview
ORIGINAL CODEX ANIMATIONLOADING REFERENCE
FAFB · FlyWire / fruit-fly brain
BRAIN REGIONS / ORIGINAL CODEX ANIMATION
Paused by default. Play shows an 8-second preview of brain regions. Individual cells and 3D neuron models open in FlyWire Codex.
02 / CIRCUIT WALKTHROUGH
Follow the signal.
A simplified route through Kenyon cells. Select a stage to explore it.
Educational schematic · Steps summarize circuit roles; arrows do not encode measured synapse counts, activity or timing. Actual circuits contain additional branches and feedback.
03 / NEUROPIL DIRECTORY
Original region explorer ↗A whole brain. Region by region.
A neuropil is a region rich in neuronal branches and synapses. Find one by name, code or hemisphere.
Loading regions…CODEX REGION NOMENCLATURE
No regions match. Try a shorter name or change the hemisphere.
Loading the region directory…
Region names and codes: Codex region catalog ↗ · Directory snapshot: 15 September 2026.
04 / CONNECTOME INVESTIGATION
Ask a better brain question.
Refine a family or follow a single cell. Queries run in FlyWire Codex.
TRACE A CELL'S CONNECTIONS
↗ All investigation links open FlyWire Codex in a new tab. Google sign-in is required there. No live neuron counts or experimental activity are shown on this page.
READ THE MAP
A few things worth knowing.
Neuron, synapse and connection: what’s the difference?
A neuron is a nerve cell. A synapse is a contact through which cells communicate. A directed connection links a source neuron to a target and may contain multiple synapses.
What do upstream and downstream mean?
Upstream partners send inputs to the selected cell. Downstream partners receive its outputs. A reciprocal partner connects in both directions; it can appear in both lists.
Does the 3D model show the fly thinking?
No. The 3D surfaces display brain anatomy. A connectome maps wiring; it does not by itself record electrical activity, thoughts or trading decisions. The signal walkthrough is an educational schematic.
Why can a neuron ID return no result?
Root IDs refer to a segmentation snapshot. Proofreading can change them. Check the dataset version and use Codex’s root-ID mapping tools if a cell cannot be found.
How should I interpret neurotransmitters?
A transmitter is a chemical messenger. The filter uses predicted labels. A target’s receptors and circuit context matter, so a label alone does not establish the effect of a connection.
FOLLOW A SPECIFIC NEURON
Have a cell ID?
Search a FlyWire root ID, cell type or annotation.
SCIENCE DESERVES CREDITReal research.
Real research.
Independent meme.
The 3D viewer uses the 78 real neuropil surfaces referenced by FlyWire Codex. The optional 2D reference is the original Codex animation. Family profiles are a short educational guide, not a downloaded copy of the connectome. Trading behavior is fictional.
3D
FlyWire neuropil surfacesNative v141_v3 geometry · Region names and IDs from Codex
↗01Original brain animationMurthy Lab · FlyWire Codex · Apache 2.0
↗02The adult fruit-fly connectomeDorkenwald et al. · Nature · 2024
↗03Learn the Codex query languageSearch cell types, annotations and connections
↗04Image licenseApache License 2.0 · Original asset unmodified
↗