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Sleep & Memory

It is no secret that a good night's sleep makes you feel better. During sleep, while your body rests, your brain is busy processing information from the day and forming memories. There are different types of memories, for something to become a memory, three functions must occur, including:

  • Acquisition -- learning or experiencing something new
  • Consolidation -- the memory becomes stable in the brain
  • Recall -- having the ability to access the memory in the future

 

Both acquisition and recall are functions that take place when you are awake. However, researchers believe sleep is required for consolidation of a memory, no matter the memory type. Without adequate sleep, your brain has a harder time absorbing and recalling new information. Scientists don't know exactly how sleep enhances memory, but it appears to involve the brain's hippocampus and neocortex -- the part of the brain where long-term memories are stored. It is thought that during sleep, the hippocampus replays the events of the day for the neocortex, where it reviews and processes memories, helping them to last for the long term. What’s certain is that sleep is a biological necessity -- we need it to survive. Unfortunately, in this day and age, few of us are able to get the sleep we need to function our best. Experts recommend adults get seven to nine hours of sleep each night. Although this may not be attainable every night, it should be the goal.

 

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