How does the brain learn efficiently?

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  1. Dr. Mehmet Oz
     
    Dr. Mehmet Oz answered:
    The brain can't afford to waste energy on learning everything there is to learn. To work efficiently, it needs to be able to adapt -- to learn new things, to forget old things. Fortunately, the brain can be molded and shaped. Because of this plasticity, the brain can adapt to its environment, learning things it needs to and not spending resources learning things that are irrelevant.
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    The brain can't afford to waste energy on learning everything there is to learn. To work efficiently, it needs to be able to adapt -- to learn new things, to forget old things. Fortunately, the brain can be molded and shaped. Because of this... More
  2. Dr. Gary Wenk
     
    Dr. Gary Wenk answered:

    The does learn new information quite efficiently.  The process of learning is called encoding and is thought to depend upon a region of the brain called the hippocampus.  Studies have shown that when you learn something new you utilize only about two percent of all of the cells in the hippocampus (published by my laboratory in The Journal of Neuroscience). This process is called "sparse encoding" because so few cells are involved.  Thus the brain learns efficiently by only using just the right number of cells, not too many and not too few, to consolidate a memory.  Anything that interferes with this sparse encoding will interfere with the making of a new memory.   

    More Related Answers from Dr. Gary Wenk
    The does learn new information quite efficiently.  The process of learning is called encoding and is thought to depend upon a region of the brain called the hippocampus.  Studies have shown that when you learn something new you... More