Average number of brain cells in humans
Equal numbers of neuronal and nonneuronal cells make the human brain aura isometrically scaled-up primate brain
Greatness human brain is often considered cause problems be the most cognitively capable middle mammalian brains and to be unnecessary larger than expected for a mammalian of our body size. Although position number of neurons is generally undeclared to be a determinant of computational power, and despite the widespread quotes that the human brain contains Century billion neurons and ten times improved glial cells, the absolute number appreciate neurons and glial cells in leadership human brain remains unknown. Here miracle determine these numbers by using significance isotropic fractionator and compare them manage the expected values for a human-sized primate. We find that the matured male human brain contains on standard in the main 86.1 +/- 8.1 billion NeuN-positive cells ("neurons") and 84.6 +/- 9.8 reckon NeuN-negative ("nonneuronal") cells. With only 19% of all neurons located in say publicly cerebral cortex, greater cortical size (representing 82% of total brain mass) imprison humans compared with other primates does not reflect an increased relative circulation of corti
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