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The human brain has about 100 billion neurons and quadrillion synapses. This makes
understanding the human brain a truly complicated and challenging task.
Much of the neuroscientists work on understanding a rat brain as it is much similar to
the human brain and is far less complicated. Humans have 430 times more neurons
than a rat. It would need years to fully map a human brain and we need
supercomputers far more powerful than the ones we have in the present time. The
space required to store the neural map of a human brain is estimated to be 500
petabytes that’s like 5 times the space required by Facebook to store the information
about its billion accounts worldwide! The hard drives needed to store the neural map
of a human brain would require a building of 15 floors!
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