Even a fly's brain is ad space now · an experiment by @fulutmd

Make a fly think about your brand

We turned a fly's brain into the world's smallest billboard. Type your brand or drop in your logo, it lights up the neurons inside a real simulation of the fly's brain, and the fly tells you what it thinks: it gets curious, it reaches for food, it turns away, or it panics. You get an 11-second clip of it.

or · free · about 30 seconds · your logo never leaves your browser · anonymous visit counts only. Soon: rent minutes in its mind, DM @fulutmd.

Our own brand, in its head right nowBRANDTHEFLY · live · 138,639 neurons
â—Ź Replay1Your brand, written into the brain
loading brain…
real neurons firing your logothe brain reacting
5Ă— slow motion
2The fly's reactionWhat its brain tells the body while your brand fires
Loading fly…
body animated from the brain's output neurons · 1 mm grid
3How the fly feels about your brandlive, from its output neurons · same brain for every brand
Hungry? its tongue neuron vs a real sugar taste0%
Curious? its antenna neurons0%
Brain cells lit up out of 138,6390
Fly is thinking…
138,639real neurons
4.9Mconnections
11 sclip to post
0real flies involved
Live preview

See your brand on the panel

Type your brand or drop in your logo. Every lit point is a real neuron, at its real position in the brain.

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“Make my clip” runs all 138,639 neurons right in your browser, then records an 11-second video. Keep this tab open while it records. Your logo never leaves your device. On phones it can take a minute or two.

Preview · your logo only
Fly moods

How did the fly feel about it?

0%as tasty as sugar

Every brand gets the same brain, so nobody gets a better mood by asking nicely. Fun labels, real neurons: hungry is its tongue neuron compared with a real sugar taste, curious is its antenna neurons, and brain cells lit up is how much of its brain fired.

Next experiment

Should brands get minutes in its mind?

The idea: one fly, 1,440 minutes a day, and brands take turns living rent-free in its brain. Nothing is for sale. If you'd want your brand in there, tell me. Enough yeses and I'll build it.

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FAQ

Questions

Is this a real fly?

Real: the brain wiring (the FlyWire connectome, all 138,639 neurons), the neuron model from Shiu et al. 2024, and every neuron's position. Which neurons join in and what the brain tells the body comes from the wiring, not a script. Your logo never drives the fly's output neurons directly (its descending and motor neurons are skipped), so what the fly does has to come through the wiring.

Not real: no animal sees your logo; it's a computer simulation. The fly's body is animated from its output neurons, and the mood labels are playful names for real neuron activity.

Can I choose what the fly does?

No, and that's the fun part. Your logo lights up a different set of neurons than anyone else's, so the wiring gives every brand its own reaction. Some flies turn, some reach for food, some try to escape.

What do I get?

A square clip of your logo firing through the brain with the fly reacting next to it, plus its dopamine verdict. Post it wherever you like.

Can my brand make the fly hungry?

Maybe. Appetite measures the fly's proboscis motor neuron (MN9, the one that sticks its tongue out) against a real sugar taste in the same model. Results differ by brand and a little from run to run. Its dopamine reward neurons are a tougher crowd: they have stayed quiet for every brand so far.

Which logos are allowed?

Your own brand or product. No hate, adult content, scams, or logos you don't have the right to use.

Can I buy a spot in the fly's mind?

Not yet. This is an experiment. If you'd want your brand in there, DM @fulutmd and say so.