--- title: "TheFlyBrain · A Complete Fly Brain, Simulated" url: https://theflybrain.com/ description: "A 3D fruit fly whose eyes feed a 166,700-neuron model of the complete fruit fly central nervous system, and a registry of 117 fly brain experiments: rituals…" language: en --- *Drosophila melanogaster* # A complete fly brain. 166,700 neurons. 25.6 million connections. One fruit fly, and a registry of experiments to put them through. [Try an experiment](https://theflybrain.com/try/) [Browse all experiments](https://theflybrain.com/experiments/) Our fly, named [Specimen 237](https://theflybrain.com/specimen-237/): a micro-CT-derived body with 69 articulated segments, and the MaleCNS v1.0 nervous system. Drag to rotate both. ## Built from real anatomy. ### Body The fly’s body is the NeuroMechFly model: 69 segments derived from micro-CT scans of a female *Drosophila melanogaster*, articulated joint by joint. ### Brain The nervous system is MaleCNS v1.0 from FlyEM at HHMI Janelia: the complete male central nervous system, run as 166,700 leaky integrate-and-fire units with fixed weights. ### Eyes Each experiment renders what the fly sees from its own head. Display settings change what you see, never what it sees. **Beyond the eyes.** Dedicated experiments deliver smell, taste, touch, hearing, temperature, humidity and limb-position input to the fly’s matching sensory neurons. - [Smell](https://theflybrain.com/experiments/odor-lab/) - [Taste](https://theflybrain.com/experiments/taste-lab/) - [Touch](https://theflybrain.com/experiments/touch-lab/) - [Hearing and wind](https://theflybrain.com/experiments/antenna-lab/) - [Temperature](https://theflybrain.com/experiments/thermal-lab/) - [Humidity](https://theflybrain.com/experiments/humidity-lab/) - [Limb position](https://theflybrain.com/experiments/proprio-lab/) The body and the nervous system come from different specimens and are not anatomically registered. [Read the specimen file](https://theflybrain.com/specimen-237/) ## Every scene is rendered.Every spike is recorded. Each scene is built and rendered in 3D. What the fly sees is rendered from its own head and delivered, as retinal input, to a spiking model of the complete male fruit fly central nervous system. The spikes that follow are recorded, not drawn. Experiment No. 0020 · Master Mason ## Raised to the sublime degree. A 52-stage lodge ceremony condensed from Duncan’s *Ritual of Freemasonry* (1866). Twenty-seven flies hold the offices and walk the circuits. Our fly is the candidate. [Run this experiment](https://theflybrain.com/experiments/master-mason/run/) [Experiment notes](https://theflybrain.com/experiments/master-mason/) Runs in your browser, with the compound-eye inspector and a simulated neural panel. [![The lodge, with the brethren gathered for the raising](https://theflybrain.com/images/lodge-poster.jpg)](https://theflybrain.com/experiments/master-mason/run/) ## 19 experiments run in your browser. Pick a camera, switch to wireframe, look through the compound eye and open the neural panel. [No. 0040**The Abramelin Operation** Run](https://theflybrain.com/experiments/abramelin/run/) [No. 0033**Red Laser DMT** Run](https://theflybrain.com/experiments/dmt-laser/run/) [No. 0037**Seed of Life Sequence** Run](https://theflybrain.com/experiments/seed-of-life/run/) [No. 0032**Sunday Mass (Roman Rite)** Run](https://theflybrain.com/experiments/catholic-mass/run/) [No. 0050**Double-Slit Detector** Run](https://theflybrain.com/experiments/double-slit/run/) [No. 0041**The Babalon Working** Run](https://theflybrain.com/experiments/babalon-working/run/) [No. 0062**Great Pyramid of Giza Interior Survey** Run](https://theflybrain.com/experiments/great-pyramid/run/) [No. 0063**Tunguska 1908 Airburst and Treefall Survey** Run](https://theflybrain.com/experiments/tunguska/run/) [No. 0059**Mevlevi Sema (Whirling Dervish Ceremony)** Run](https://theflybrain.com/experiments/mevlevi-sema/run/) [No. 0076**The Dancing Plague of 1518 (Strasbourg)** Run](https://theflybrain.com/experiments/dancing-plague/run/) [No. 0077**Coffin Dance (Ghanaian Dancing Pallbearers)** Run](https://theflybrain.com/experiments/coffin-dance/run/) [No. 0056**The Star Gate** Run](https://theflybrain.com/experiments/stargate-corridor/run/) [No. 0054**The War Room** Run](https://theflybrain.com/experiments/war-room/run/) [No. 0049**Apollo Landing (Studio Reveal)** Run](https://theflybrain.com/experiments/apollo-studio/run/) [No. 0051**The Shining: Six Scenes** Run](https://theflybrain.com/experiments/shining-medley/run/) [No. 0080**Ezekiel’s Wheels Full of Eyes (Ezekiel 1 and 10)** Run](https://theflybrain.com/experiments/ezekiel-wheels/run/) [No. 0096**Guillotine, Place de la Révolution 1793: Neck-Cut Connectome Model** Run](https://theflybrain.com/experiments/guillotine/run/) [No. 0097**Pompeii 79 AD Eruption and Fiorelli's Plaster Cast** Run](https://theflybrain.com/experiments/pompeii/run/) [See all browser experiments](https://theflybrain.com/try/) 166,700 Neurons in the model MaleCNS v1.0 · FlyEM / Janelia 25,582,938 Directed connections Fixed weights 69 Articulated body segments NeuroMechFly · micro-CT 117 Experiments in the registry And counting ## From the registry. [No. 0042 ### The 31st Degree The fly occupies the candidate's role in a complete presentation of a supplied Thirty-first Degree ritual text, from the cave prelude through four Egyptian altars, the weighing, judgment and investiture to the return to the cave.](https://theflybrain.com/experiments/degree-31/) [No. 0036 ### Mars HiRISE Terrain Survey The fly, enlarged to tens of metres, walks a looping five-stop survey route across Martian terrain built from published HiRISE stereo elevation models and aligned orthoimages.](https://theflybrain.com/experiments/mars-hirise/) [No. 0013 ### Dealey Plaza Moving-Target Diorama The fly occupies the exposed sixth-floor book room of a miniature depository with a scoped rifle while an empty open-top limousine travels the plaza road at the documented 11.2 mph average.](https://theflybrain.com/experiments/depository/) [No. 0030 ### LSD Conservatory The fly stands in an indoor garden whose leaves breathe and whose floor develops moving contours; the garden unfolds into a mandala while colored silhouettes trail the fly.](https://theflybrain.com/experiments/lsd/) [No. 0067 ### Flight Simulator The fly is tethered to a torque meter inside a cylindrical panorama of four T patterns. In closed loop, its measured DNa02 right-minus-left rate turns the panorama while heat is paired with one pattern type.](https://theflybrain.com/experiments/flight-simulator/) [No. 0001 ### Media Observation The fly watches a film on a television, works at a research computer and pins timestamped frame evidence and red string to a corkboard when a measured neural response crosses a set threshold.](https://theflybrain.com/experiments/movie/) Explore by topic - [Rituals & ceremonies](https://theflybrain.com/experiments/rituals-and-ceremonies/) - [Film & media](https://theflybrain.com/experiments/film-and-media/) - [Rides & exploration](https://theflybrain.com/experiments/rides-and-exploration/) - [History & training](https://theflybrain.com/experiments/history-and-training/) - [Altered states](https://theflybrain.com/experiments/altered-states/) - [Labs & senses](https://theflybrain.com/experiments/labs-and-senses/) [All experiments](https://theflybrain.com/experiments/) The Workstation ## Run it yourself. Research Associates get the workstation’s complete source code: every experiment, the full connectome model, the neuron anatomy viewer and the instrument panels. Run it on your own computer once the prerequisites are installed. ![The workstation running the double-slit experiment, with neural activity panels](https://theflybrain.com/images/workstation.jpg) Included with Research Associate, $10 a month. Mac · Windows · Linux Research Associates also suggest and vote on the next experiments. [Become a Research Associate](https://www.patreon.com/cw/ParanoidAmerican/membership) [Setup guide](https://theflybrain.com/workstation/setup/) ## Commission an Experiment. Name what the fly should do. It is built, run on the full workstation and delivered as a 1–4 minute recording. Your name stays on its permanent page in the registry. $237 Limited slots · 14-day delivery [Commission an Experiment](https://paranoidamerican.com/products/custom-fly-brain-experiment) - For brands[Sponsor an Experiment · from $1,000](https://theflybrain.com/suggestions/#sponsor) - Free[Suggest one on social media](https://theflybrain.com/suggestions/) ## Follow the fly. Recordings are published on these channels. [Get new experiments free on Patreon](https://www.patreon.com/cw/ParanoidAmerican/membership) [RSS feed](https://theflybrain.com/feed.xml) - [YouTube](https://youtube.com/paranoidamerican) - [TikTok](https://tiktok.com/@paranoidamerica) - [Instagram](https://instagram.com/paranoidamerican) - [X](https://x.com/paranoidamerica) --- Source: https://theflybrain.com/ · TheFlyBrain (theflybrain.com) · Site summary for language models: https://theflybrain.com/llms.txt