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Biology

Nervous System of Octopuses: Central Brain and Distributed Arms

Quick fact

An octopus has about 500 million neurons, but nearly two-thirds of them (around 350 million) are distributed through its eight arms, not in its central brain.

Why this is interesting

What if your arms had a mind of their own? Octopus arms do something remarkably similar—they can taste, touch, and move without waiting for instructions from the brain. How does a creature coordinate a body that seems to have a will of its own?

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Nervous System of Octopuses: Central Brain and Distributed Arms

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