Hey there. Welcome to Life Noggin. You may think that since I'm merely an animation, I wouldn't be able to dream, right? Well, you're wrong. Last night, I had a dream I had humanlike facial features and wasn't confined to the screen of your computer. And I was able to explore the human world. And look at all those fancy toilets! I mean, look at this weird thing.
哈囉。歡迎來到 Life Noggin。你可能會覺得因為我只是個動畫角色，我就不會做夢，對吧？嗯哼，那你就錯了。我昨晚夢到我有人類的五官，而且還能飛出你的電腦螢幕。而且我還可以探索人類世界。看看那些很潮的馬桶!我的意思是，你看這東西多奇怪啊。
A lot of people can't remember their dreams, and it's a kind of strange that we can't recall something we do every single night. We are asleep about a third of our lives and dream at least 25 percent of that time. Most of our dreaming occurs during a stage of sleep called rapid eye movement, or REM. In this stage, as the name suggests, our eyes move around, but the rest of our body becomes paralyzed. That may seem terrifying, but it stops you from acting out your dreams, which could have some serious consequences, like you falling off your bed or flying into the sun.
But dreaming isn't limited to just REM. Dreams have been reported even when the sleeper had only non-REM sleep. And even if a person gets a normal amount of REM sleep, lesions in their temporoparietal junction and medial prefrontal cortex are associated with a loss of dream recollection. But luckily, most of us don't have that problem. So then why do we forget most of our dreams?
但做夢並不只限於 REM 階段。即使睡覺的人僅處於非快速動眼睡眠期，也有做夢的狀況。而且即使一個人已經得到充分的 REM 階段睡眠，若顳頂葉交界區和內側前額葉皮質有損傷，也會造成重憶夢境失敗。但幸運的是，我們大多數人都沒有那個問題。那為什麼我們還是會忘記自己大部分的夢呢？
Well, as we talked about in our video about why we forget things, humans are really good at filtering out information that doesn't matter. If something doesn't grab our attention or isn't essential to know, you don't remember it. Think about the stream of consciousness you have when you're making breakfast in the morning. Chances are you can't recite it back to me. Some scientists think the same is true of dreams.
But perhaps there is a neurological difference between those who recall most of their dreams and those who do not. To test this, researchers studied the brainwaves of both types of sleepers. They primarily studied alpha waves between eight to 12 hertz, which are also present when you are awake. Interestingly, oscillations of these alpha waves are associated with inhibition, meaning that a decrease in amplitude would correspond to a release in inhibition, and therefore it increased excitability. So let's relate that back to our dreams.
但這之間可能有神經上的差異，而這差異存在於能回想起大部分夢境和無法想起的人之間。為了測試，研究員研究了兩種睡眠者的腦波。他們主要研究 8 到 12 赫茲的 α 波，這在你醒著的時候也存在。有趣的是，這些 α 波的波動和壓抑有關，意思就是，振幅降低相當於壓抑的釋放，因此會讓你比較興奮。讓我們把那理論回推到我們的夢。
While the volunteers were awake, tones were played in their ears along with occasional and random first names. Those who recall their dreams four or more times a week had a more sustained decrease in their alpha waves compared to those who only recall their dreams once or twice a month. In other words, the high recalling group had a deeper processing of the first names while they were awake.
However, this difference was not there during REM sleep. Instead, the alpha waves increased, possibly causing the volunteer to wake up. In fact, the main difference between groups was that those who recalled their dreams often woke up more throughout the night. This led scientists to believe that the time awake allows the dream's information to be encoded into long-term memory, allowing the sleeper to remember it the next morning. More time awake, more time to store the information. Makes sense, right?
But before we can say anything conclusive, we need more research. We are just at the tip of the iceberg when it comes to our knowledge about dreams and my knowledge about toilets. What is happening there? Anyway, why we forget dreams is still not exactly known. So tell me, do you remember most of your dreams? And if so, what's the weirdest dream you've had?
- 「吸引某人的注意」- Grab Someone's Attention
If something doesn't grab our attention or isn't essential to know, you don't remember it.
- 「可能」- Chances Are
Chances are you can't recite it back to me.
- 「也有同樣情況、也適用於…」- The Same Is True Of
Some scientists think the same is true of dreams.