The Mind at Night Book Summary - The Mind at Night Book explained in key points
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The Mind at Night summary

Andrea Rock

The New Science of How and Why We Dream

4.3 (71 ratings)
13 mins

What is The Mind at Night about?

The Mind at Night (2004) provides valuable insight into the mystery of the dream world. Find out exactly how busy our minds are while we slumber, and discover the many physiological, psychological and evolutionary advantages that dreaming gives us.

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    The Mind at Night
    summarized in 6 key ideas

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    Key idea 1 of 6

    We journey through a cycle of five stages of sleep every night.

    Considering that we spend a third of our life asleep, it makes sense to know about what’s going on when we’re sleeping.

    It all starts with a period of pre-sleep, when our mind settles down, stops trying to make decisions and plans, and enters an almost meditative state to prepare the mind for sleep.

    From there, we enter light sleep, which covers the first two stages.

    During the first stage, or sleep onset as it’s known, we often see flashes of disjointed images, known as hypnagogic imagery. This is the brain’s way of sorting through the day’s experiences and deciding what to trash and what to stash. Some things get forgotten, while others are deemed important enough to store in our long-term memory.

    Then stage two begins and our brain winds down further to make way for the stages of deep sleep that follow.

    These deep third and fourth sleep stages are characterized by slow brain waves, and we generally cycle through the first stages once again before arriving at the fifth and final stage, which is marked by REM – or rapid eye movement – sleep.

    It takes between fifty and seventy minutes to get through the first four sleep stages, and the REM period can be as short as ten minutes. So, altogether, the process lasts about ninety minutes, with the combined stages of deep sleep and REM usually accounting for a quarter of our total sleep during any given night.

    While all five stages have their own important functions, it’s at the fifth REM stage when we experience our most vivid dreams and when our mind goes through its internal processes.

    In the blinks that follow, we’ll take a closer look at how important these dreams have been and continue to be.

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    Best quote from The Mind at Night

    A properly functioning dreaming system may actually be more effective than [some] forms of psychotherapy...

    —Andrea Rock
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    About the Author

    Andrea Rock is an investigative journalist who has won a number of awards, including the National Magazine Award and the Investigative Journalist and Editors Award.

    Who should read The Mind at Night?

    • Anyone who’s ever kept a dream journal
    • Students of neuroscience or psychology
    • Readers curious about lucid dreaming

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