Octopus - one of the smart species does not use the brain

About 350 nerve cells along the tentacles help the octopus react quickly to the environment even when cut off.

Tentacles are places where many octopus neurons are concentrated.(Photo: Science Alert).

New research on the ability to react quickly to prey and enemies shows the intelligence of octopus has been announced by scientists at the 2019 Biological Science Conference held in late June in the United States. The study was conducted on giant Pacific octopus (Enteroctopus dofleini) and Eastern Pacific Octopus (Octopus rubescens) . They have about 500 million neurons, of which about 350 million neurons are located along the tentacles. This helps the octopus react quickly to the environment and surrounding elements such as enemies and prey.

"The octopus brain cannot control 8 tentacles and their complex movements. Tentacles only need to send information to the brain without the brain processing," said neuroscientist Dominic Sivitilli, Dai. said Washington.

The team used neural recording and behavioral monitoring techniques to better understand how neural neurons in tentacles receive and process information when octopus moves to hunt and explore. They found that the senses and senses of octopus receive information very quickly, they process and signal to octopus to perform action without the intervention of the brain.

These studies have demonstrated that octopus brains and tentacles work completely independently of each other. Even if it was cut off, the tentacles could still move and move.

1. The genius of the ocean? Please call the octopus name!
2. Why aren't octopus tentacles tangled together?