The New Maps of Your Mind

Maps that encompass the complete brain bring new depth and detail to neuroscience—and create gorgeous views of the landscape inside your head.

You have about 100 billion nerve cells, give or take, packed inside your brain. Each one is wired up to about 10,000 other cells. Together, they form around one quadrillion connections. Through this electrobiological grid zip about 8.6 quadrillion messages each day. If those numbers make your head spin, try this comparison: Each day the entire global population places roughly 50 billion cell phone calls and sends 17 billion text messages and 300 billion emails. In other words, the daily digital ...

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