“The brain
seems to be investing resources and energy in inducing forgetting to enable you
to [dispose] of information that is no longer relevant to you,” says
Blake Richards, assistant professor at the University of Toronto. The
hippocampus, the section of the brain responsible for storing memories, is one
of the only areas of the brain that generates new cells after birth. It seems
the brain is constantly creating new cells for memory storage, but more
importantly, erasing old cells it thinks we no longer need. This prevents the
brain from having to sort through so much information when we rack our brains
trying to remember something. One thing the journalist made note of here is how
important sleep is to memory retention, deep sleep is actually when our brain
makes those long-term connections.
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