ANATOMY

Detailed explanation-1: -Remarkably, at an average of 86 billion neurons and 85 billion nonneuronal cells (25), the human brain has just as many neurons as would be expected of a generic primate brain of its size and the same overall 1:1 nonneuronal/neuronal ratio as other primates (26).

Detailed explanation-2: -For half a century, neuroscientists thought the human brain contained 100 billion nerve cells. But when neuroscientist Suzana Herculano-Houzel devised a new way to count brain cells, she came up with a different number-86 billion.

Detailed explanation-3: -Approximately 86 billion neurons in the human brain.

Detailed explanation-4: -Figure 1 illustrates the enormous, 69 billion-neuron computational capacity of the cerebellum compared to 16 billion neurons in the cerebral cortex [35] that is proposed have been and continues to be behind the evo-lution of uniquely human culture.