The human cerebral cortex has an area of about 2.5 square feet, has 25 billion neurons, is interconnected by over 100,000 kilometers of axons and receives 300 trillion synapses.
The Edwin Smith surgical papyrus, written about 1,700 B.C., contains the first recorded use of the word "brain."
In 1891, Wilhelm von Waldeyer coined the term "neuron."
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