The human brain is seriously amazing. For example, there are an estimated one billion neurons (nerve cells) in the brain, and they each form about 1,000 connections to other neurons, forming hundreds of billions of connections, enough to store 2.5 billion Petabytes of data, yet our short term memory can only hold about 7 pieces of information for 20 seconds! Why is this the case? And what else does neuroscience and psychology tell us about how memories work in the brain?
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