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NokoFace
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NokoFace
@CocoNokoFace
🔞 31. He/Him. SqueakSqueak 🦦🏳️🌈 Lover of FromSoftware, Final Fantasy, World of Warcraft and bugs. Will retweet bugs! PFP and banner by sweetmacchi on 🦋
شامل ہوئے Şubat 2012
228 فالونگ79 فالوورز
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Your fingers have zero taste buds. An octopus arm has 40 million neurons, and every sucker on it can taste whatever it touches. That arm wrapped around this guy's finger is tasting him right now, and it decided to hold on before the octopus's brain even got the message.
An octopus has around 500 million neurons, roughly the same as a dog. But two thirds of them aren't in the brain. They're spread across all eight arms, about 40 million per arm, which is more than double what an entire frog has in its whole body. Those neurons form tiny local processing centers (scientists call them ganglia) that let each arm feel its way around and make grab-or-don't-grab decisions without checking with the brain. The brain sends a vague order like "go find food." A University of Washington team filmed this in 2019 and confirmed the arms were starting grabs on their own, coordinating with neighboring arms, and reading their surroundings while the main brain had zero idea where the arms even were.
280 suckers per arm on a big Pacific octopus. Around 2,240 total. Each one grips, tastes, and smells at the same time. In 2020, a Harvard lab run by Nicholas Bellono found that octopus suckers contain a completely new family of sensory receptors unique to cephalopods (octopuses, squid, and their relatives). They named them chemotactile receptors. These respond to chemicals that sit on surfaces like crab shells, rocks, and human skin, not stuff dissolved in water. The octopus has to physically touch something to taste it. So when a sucker contacts a crab versus a rock, the arm knows the difference and starts grabbing before the brain gets any update.
Cut an arm off and it keeps going. Severed octopus arms still respond to touch, pull away from pain, and even grab food and try to pass it toward a mouth that no longer exists. This goes on for up to an hour. The arms also won't grab their own skin. A 2014 paper in Current Biology found octopus skin has a chemical coating that tells the suckers not to latch on. They can even tell their own severed arm apart from one that came from a different octopus.
A January 2025 Nature Communications paper from the University of Chicago found the nerve cord running down each arm is built in repeating segments, one per sucker. That gives the octopus independent control over each of its 2,240 suckers, every one a tiny touch-taste sensor wired to its own piece of nervous system that operates without permission from the brain.
The guy in this video is being gripped, tasted, and chemically profiled by a limb with more computing power than a frog has in its entire body.
Science girl@sciencegirl
An octopus holds this guys finger 📹 Pierre Barre
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he has something to say to you
gross boy🐌@grossb0y
hello beautiful mantis, fate has brought us together for a beautiful reason
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