We often imagine that human consciousness is as simple as the input and output of electrical signals within a network of processing units – therefore comparable to a computer. The reality, however, is much more complicated. For starters, we don’t actually know how much information the human brain can hold.
Two years ago, a team at the Allen Institute for Brain Science in Seattle, US, mapped the 3D structure of all the neurons (brain cells) comprised in one cubic millimeter of the brain of a mouse – a milestone considered extraordinary.
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