86 billion neurons (8.6 x 10ˆ10)
220 miles per hour (Speed of a neural impulse)
25 watts of power
0 pain receptors
4 millimeters is the thickness of the human cerebral cortex
(equal to 4 credit cards stacked)
Area of cortex unfolded: 2,500 square centimeters
(equal to a newspaper unfolded)
400 miles of capillaries
(the distance from Washington D.C. to Providence (Rhode Island State))
8 Liters is the volume of the Sperm Whale brain, nature's largest
100 thousand miles of axons
(4 trips around the world)
10,000,000,000,000,000 (10ˆ16) calculations per second
Over 10 Trillion Synapses (10ˆ12)
(more than the number of cells in the entire body
20% of the body's oxygen consumed
15 feet longest axon on land (Giraffe)
30 feet longest axon on water (Blue Whale)
2 million with epilepsy
4 million with Alzheimer
4 million with stroke
by Dwayne Godwin and Jorge Cham
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