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HomeDigit NewsHow the human brain differs from the brain of developed animals

How the human brain differs from the brain of developed animals

Experts have compared the neurons of a number of animals, including macaque, marmoset monkey, mouse, rat and others. All animals participating in the study had the same ion channel density.

At different sizes, and the corresponding number of channels, neurons in animals work in the same way. In mammals, in the membranes of pyramidal neurons of the fifth layer of the cerebral cortex, on which scientists focused, the thickness of the cortex and the size of neurons increased from the smallest to primates, at the same time the density of ion channels in each individual neuron was the same. This means that the electrical properties will be the same for both the mouse and the monkey. But in humans, neurons are built differently: in humans, despite their size, the density of ion channels turned out to be less than in animals.

Scientists suggested that such properties of channels in humans are energy saving. All channels require “maintenance”, and the more there are, the more energy is needed for their uninterrupted operation. Probably, in the process of human evolution, “animal” neurons left his brain, and energy is distributed to other tasks.

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