Just How Fast Is Your Brain?
The speed at which your brain performs calculations depends on your definition of "calculation." This huge number reflects the number of signals sent by neurons in the brain each second.
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from Piled Higher and Deeper (PHD Comics)
Key Facts In This Video
If unfolded, your cerebral cortex would cover about the same area as an unfolded newspaper. (0:08)
There are 643 km (400 mi) of capillaries delivering blood to your brain cells. (0:42)
The brain has no pain receptors. (0:56)