However, unlike dogs and other vertebrates, where most of the neurons are in the brain, more than two-thirds of the octopus neurons are in the arms and body. "Some scientists think of an octopus as a creature with nine brains, with one central brain and eight small brains on each arm," says Dr.2. 2020г.
Does the cephalopod have a concentrated nervous system?
Among mollusks and all invertebrates, cephalopods have a highly centralized, large and complex brain (Nixon and Young, 2003). The brain surrounds the esophagus and is subdivided into 25 major leaves, which are further subdivided into 37 or 38 leaves by the octopus and decapod, respectively.
Does the octopus have a peripheral nervous system?
Summary: Octopus has more neurons in the peripheral nervous system (PNS) than in the brain. PNS neurons may be involved in the formation of cognitive networks with the central nervous system in the same way that the cerebellum is currently thought to contribute to mammalian cognition.
How many nervous systems does an octopus have?
Not so. They have a central brain and eight separate ganglia, or mini-brain, but their nervous system is wired quite differently from most vertebrates, including mammals such as humans. Still, compared to most invertebrates, octopuses are very intelligent.
Do octopus tentacles have their own brain?
Each of the octopus's arms has a small cluster of nerve cells that control its movement, so the creature technically has eight independent mini-brain with a larger central brain. Researchers have long known about the unique biology of octopus.