MOUSEBRAIN

live

Where the mouse is right now

A page goes in through 892 hex columns, 165,122 neurons integrate, and a cursor comes out. Every number on this panel is read out of the running simulation.

MOUSEBRAIN LIVE DROSOPHILA CONNECTOME · OPEN INTERNET VISION MOTOR SIMULATION INTERNET WALLET 165,122 NEURONS 10,228,000 EDGES ● LIVE

THE MOUSE IS BETWEEN RUNS
nothing is being streamed right now

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Neural activity

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NEURONS FIRING of 165,122

spikes/sec

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membrane

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visual

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motor

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Firing neurons · soma positions

Descending neurons

Vision → retina

L1 on

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L2 off

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columns

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Mushroom body · learning

depressed

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mean gain

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rewards

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punishments

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KC→MBON synapses under dopamine. Depression only — that is the rule a mouse actually uses.

Motor output

Event stream

pages—

clicks—

scrolls—

brain steps—

vetoed—

No wallet, no keyboard, no downloads. Every click is checked before it lands and vetoed if it looks like it commits something — a submit, a sign-in, a purchase.

what it is

A real nervous system, not a metaphor

Every connection in this thing was traced from electron microscope images of an actual male mouse. Nothing is invented, nothing is sampled from a distribution, and it is not a neural network "inspired by" a brain.

The male Drosophila CNS connectome was released in September 2026 by HHMI Janelia FlyEM, the Cambridge Connectomics Group and Google Research, under CC-BY. We keep the 165,122 neurons marked traced, drop pairs with fewer than three synapses, and take each connection's sign from its predicted neurotransmitter — acetylcholine excites, GABA and glutamate inhibit. The neurons run as leaky integrate-and-fire units: rest −52 mV, threshold −45 mV, 20 ms tau.

how it reaches the world

It sees with a mouse's eye and moves with a mouse's legs

A screenshot of a live web page is sampled through 892 retinotopic hex columns into L1 and L2 — the lamina monopolar cells sitting directly behind photoreceptors R1–R6. All 165,122 neurons integrate. The cursor comes back out of the descending neurons a mouse actually walks with.

Left versus right. A mouse steers by asymmetry between the pair, so the difference drives the cursor's x.

MLR

Forward walking. Drives the cursor's y.

CST

Backward walking. Makes a mouse walk backwards; here it reverses.

PAG

Stopping. A mouse freezes when it fires, so it became the click.

the plan

How it got here

Not a roadmap of promises — a sequence, with everything before the amber line already done and checkable in the repo.

Connectome loaded165,122 traced neurons, 10,228,000 signed connections, built from the public dataset

done

Eye wired892 hex columns into L1 and L2, sampling a live browser

done

Hands wiredM1, MLR, CST and PAG driving a real mouse

done

Trained without touching the wiringOnly per-cell-type synaptic gains, by evolution strategy. Held-out +20.85 against +2.65 untrained

done

Launched a token on-chainIt filled the form and the click produced one signed transaction

done

Reward loop closed44,042 KC→MBON synapses under dopamine, depressed the way these synapses actually are. Twenty rewarded encounters moved reward-side MBONs −6.0%, left punishment-side at −0.9% and Kenyon cells unchanged

done

Give it a nose2,635 olfactory receptor neurons across 53 receptor types, fed token metadata as if it were an odour — a second opinion that is not visual

building

ReleasedA budget, a browser, no schedule and no instructions. It starts roaming when the process does and, if a run dies, waits six seconds and starts another life. Nobody picks where it goes

done

on-chain

$MOUSEBRAIN

Launched by the mouse, from the mouse's own wallet, on Robinhood Chain. Read the receipt yourself rather than taking this page's word for it.

Contract	—
Paired	—
Creator tax	—
Supply	—
Chain	Robinhood Chain · id 4663

open on the launchpad

what is not real, stated plainly

The parts that aren't the mouse

The mouse does not fill the whole form. It reliably gets the description, often the ticker, rarely the name. A script completes what it misses, picks the paired asset and sets the creator tax — and the live log labels which was which.
It cannot read. 892 columns is roughly a 30×30 pixel view. Text is texture to it, so it targets any unfilled box rather than the right one.
Light mode blinds it. Its retina is a luminance map and all of its tuning was done against dark interfaces. On a light page it filled 0 of 3 fields; on a dark one, 2 of 3. That gap is the clearest evidence the eye is doing real work.
It has no goals. A mouse brain has no language and no plan. It cannot read a page, form a view about a coin, or write a note. Releasing it means nobody is steering, not that it decided anything.
The reward signal is invented. The circuit, the plasticity site and the direction of the rule are all real and measured. What a mouse is rewarded by is sugar, not by reaching a web page — novelty stands in for it here, and that is a choice a person made.
It roams inside a fence. An allowlist keeps it on Robinhood Chain and pons. That is a choice, not a limit of the mouse — one environment variable takes the fence down, and an unfenced random clicker on a public stream is a bad idea for reasons that have nothing to do with the brain.