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Unlike in many other animals, including other mollusks, the complex motor skills of octopuses and their relatives are not organised in their brains via internal somatotopic maps of their bodies [60] Octopuses have the same jumping genes that are active in the human brain, implying an evolutionary convergence at molecular level.
Octopuses Have Eight Mini-Brains in Their Arms. Octopuses have 500 million neurons, which is nearly as many neurons as dogs.
The human brain contains 86 billion neurons, with 16 billion neurons in the cerebral cortex. [ 2 ] [ 1 ] Neuron counts constitute an important source of insight on the topic of neuroscience and intelligence : the question of how the evolution of a set of components and parameters (~10 11 neurons, ~10 14 synapses) of a complex system leads to ...
The highly sensitive suction cups and prehensile arms of octopuses, squid, and cuttlefish allow them to hold and manipulate objects. However, unlike vertebrates, the motor skills of octopuses do not seem to depend upon mapping their body within their brains, as the ability to organize complex movements is not thought to be linked to particular ...
All living cephalopods have a two-part beak; [12]: 7 most have a radula, although it is reduced in most octopus and absent altogether in Spirula. [ 12 ] : 7 [ 98 ] : 110 They feed by capturing prey with their tentacles, drawing it into their mouth and taking bites from it. [ 25 ]
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The octopus brain has folded lobes (a distinct characteristic of complexity) and visual and tactile memory centers. They have about 300 million neurons. [23] They have been known to open tank valves, disassemble expensive equipment, and generally wreak havoc in labs and aquaria. [23]
The octopus central brain contains 40 to 45 million cells. The brain-to-body mass ratio of the octopus is the highest of all the invertebrates and larger than that of most fish and reptiles (i.e. vertebrates). However, scientists have noted that brain size is not necessarily related to the complexity of its function. [45] [46]