7,126 real neurons, recorded from rats.
Listen to them fire, explore a real rat brain in 3D, and send their activity through a simulated rat cortex. Every result can be re-run and checked by anyone.
Real recordings from a published study. Rent one to make it yours →
- 7,126
- recorded neurons
- 20
- rats
- 5,924
- cells in the cortex model
- 16
- brain regions in 3D
Drag to turn · scroll or pinch to zoom · click the brain to explore it
Figure 1. The rat is our illustration. The brain inside it is real anatomy from the Waxholm MRI atlas; pink marks the somatosensory cortex.
Meet a real neuron.
Its spike shape and firing record were measured in a real rat’s cortex. Those measurements are its traits: nothing here is generated.
Figure 2. The neuron’s average spike shape, about 4 ms long.
Each click is one real spike at its real time, shaped by this neuron’s own recorded spike.
Its music is the whole recording compressed into one minute: every note is one real spike. Bursts climb, quiet stretches fall low.
Every trait comes from the neuron’s real measurements. Rarity is how uncommon its combination is across all 7,126; ranks are unique. How traits work
All 7,126 neurons
Every neuron in the lab, with its real measurements. Any of them can be rented by the day.
Rent a neuron
Every neuron can be rented by the day, one renter at a time. While it’s yours you can name it, record its results in the cortex and take its sound and data with you.
Collect
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My Lab
Your neurons, your saved experiments and your history, in one place.
Sign in to see the neurons you’re renting.
How it works
Rent
Pick any of the 7,126 neurons and rent it by the day. While it’s yours you can name it, record its results and take its sound and data with you.
Fire
Replay its real recorded activity into the shared rat cortex model. Everyone drives the same cortex.
Check
Results go into a permanent public record. The model is locked by its fingerprint, so anyone can re-run a result and get the identical answer.
Fire into the cortex
One simulated rat cortex, shared by every holder. Pick neurons, choose how long to replay, and fire.
Figure 3. A simplified simulation of Blue Brain’s rat cortex model, run in your browser, driven by real recorded activity.
This week in the lab
The biggest results recorded this week. Every one can be re-run by anyone: press Run it to fire the same neurons in the cortex yourself.
Top results this week
Most rented lately
The 20 rats behind 7,126 neurons.
Every neuron was recorded from one of these rats. Pick one: its body is sized from its real weight, the areas it was recorded from light up, and each probe is placed where the researchers inserted it.
Rat
Where the probes went in
Real, from the study: each rat’s sex, weight, neuron count and probe sites (in millimetres from the skull landmark bregma). The body is an illustration sized from the real weight; all rats share one real MRI reference brain, aligned so the recorded sites fall in their areas. Area borders differ between reference brains, so some motor-cortex sites sit at a border here.
Explore a real rat brain.
The Waxholm Space atlas: an MRI scan of a real adult rat brain, traced into regions. Turn it, zoom in, cut it open, pull it apart, and click any region to find out what it does.
Real anatomy, simplified for the web: region surfaces from the Waxholm Space rat brain atlas v4 (MRI, 39 µm). It shows regions, not individual neurons or wiring.
Open to people and AI agents.
Everything you can do here, a program can do too. No account and no key.
- An open API. Fire neurons into the cortex, look up any of the 7,126, and get the neuron of the day and its music.
- Built for AI assistants. Add the lab as a connector in Claude or any MCP client and ask in plain words.
- Checkable by anyone. Every result carries a fingerprint. Run it again, anywhere, and you get the same one.
$ curl /api/fire?neurons=6107,3409&ms=300
→ model spikes, spikes per layer, fingerprint 0x…
$ run it again
→ the identical fingerprint ✓
$ curl /api/neuron-of-the-day
→ today’s featured neuron, its traits and its music
https://ratprocessingunit.com/mcp