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Whether it's from an awful breakup or a traumatic life event, some memories can haunt us for our entire lives.
But, what if there was a way that you could completely forget these all together?
Can science erase your bad memories?
Memory is an incredibly complex process;
while scientists used to believe it was like a filing cabinet and particular memories were stored in different sections of the brain,
we now know this is incorrect.
In fact, each memory is a brain wide process.
If you end up remembering this video, it's because the cells in your brain are being triggered and fired,
building new connections and links and literally rewiring the circuitry of your mind.
And this change is partially facilitated by proteins in the brain.
So what if the proteins aren't available?
Simply put memories can't be made.
Seriously scientists have tested this by giving animals drugs that prevent these proteins from forming.
As a result the animals have no recollection of the things that took place shortly after the drug was taken.
From this research, scientists actually found a way to target long term memories for deletion.
You see, every single time you remember a memory, your brain is once again firing and rewiring.
In fact, each time you reflect on a memory, you are literally physically changing that memory in your mind.
And each time that memory is altered a little, reflecting your current thoughts.
Remembering is an act of creation and imagining, meaning the more you reflect on old memories, the less accurate they become.
And scientists have actually quantified this change.
After 9/11, hundreds of people were asked about their memories of the dreadful day.
A year later, 37% of the details had changed.
By 2004, nearly 50% of the details had changed or gone missing.
And because memories are formed and rebuilt every time,
if you administer the protein inhibiting drug while recalling a memory, the memory can be effectively removed.
To test this, scientists took lab rats and played a sound for them, shortly followed by an electric shock.
After doing this multiple times, the rats quickly learned that if they heard the sound, a shock was soon to follow.
As a result, they would stress up and freeze every time they heard it.
Months later, these rats would still respond to the noise;
however, if they administered the drug first, the rats would lose the memory of the sound, and simply continue on.
They had lost their memory of that specific noise.
To be sure the drug wasn't just causing large scale brain damage, scientists repeated these experiments with multiple tones this time.
Both sounds would warn for a shock, and eventually the mice would fear both.
But if they administered the drug and played only one of the sounds,
the mice would only forget that one tone, while still remaining fearful of the other.
Over time scientists have discovered specific drugs to target particular proteins across different parts of the brain.
So, if you experience a terrible emotion with a memory,
then targeting a protein in the emotional regions of the brain can help to remove that connection alone.
Which could be an amazing tool, especially for patients suffering from something like Post Traumatic Stress Disorder
But while these drugs are in the very early stages, the question remains;
if you were given a "forgetting pill" would you be willing to take it?
Special thanks to Audible.com for supporting this episode and giving you a free audio book of your choice at audible.com/asap.
Audible is the leading provider of audio books with over 150,000 downloadable titles across all types of literature.
We recommend the book “Undeniable: Evolution and the science of creation” by the one and only Bill Nye the Science Guy who we did a video with on this channel a while back!
You can download this audio book or another of your choice, for free, at audible.com/asap.
And with a subscription you get one free book a month!
Special thanks Audible for making these videos possible! And subscribe for more weekly science videos!



好想忘掉這一切!我們有辦法除去記憶嗎?(Can You Erase Bad Memories?)

44409 分類 收藏
朱朱 發佈於 2015 年 2 月 26 日    朱朱 翻譯    林曉玉 審核



haunt 是「反覆煩擾」的意思,例如:
E.g., Many soldiers who came back from the war were still haunted by the terrible scenes in the battle field after many years.

這個字跟 hunt(打獵)長得很像,但是多了一個 a,不要搞錯囉!兩者念法也有差異(haunt /hɑːnt/;hunt /hʌnt/)。
haunt 當形容詞使用時寫作 haunted,可用來形容焦慮不安的樣子,例如 a haunted look(焦慮不安的神情),另外一個常見的用法則跟「鬧鬼」有關,例如 haunted house 指的就是鬼屋。

being triggered and fired0:33
trigger 當名詞用時是「板機」和「開始」意思,動詞就是「引發」,而 fire 在這裡也是當動詞用,是「發射」的意思,所以影片裡講的就是神經細胞被觸發活化產生連結。因為其他篇有介紹過 trigger,這次小編就補充幾個 fire 的用法吧!

fire 可以指「連珠砲似的提出(問題)」或是「猛烈地(抨擊)」。
E.g., The journalist kept firing questions at the new mayor for 1 hour.

fire 也有「使激動;激發」的意思。
E.g., Peter had a great math teacher who fired Peter with passion for math at an early age.

你有沒有什麼問題想問VT呢?Fire away!!(問吧!)

Simply put0:45
Simply put 是比較口語的用法,意思就是「簡單來說」,這邊的 put 就是 put into words 的簡短版。以下這些用法也可以用來表達「簡單來說」:

in short
E.g., Kelvin's girlfriend is smart, beautiful and incredibly rich. In short, she's perfect.

in a nutshell
E.g., We've been walking around in the same place for half an hour and don't know where we are. In a nutshell, we're lost.

in a word
E.g., My boss always yells at me, my pay is low, and I feel bored every day. In a word, my job sucks.

make a long story short  (長話短說)
E.g., It's hard to explain why he's been missing for so many days, but to make a long story short, he was arrested.

Post Traumatic Stress Disorder2:52
Post Traumatic Stress Disorder 的縮寫是 PTSD,有時候會在報章雜誌上看到,中文全名是「創傷後壓力症候群」,指的是人在對抗或遭遇重大壓力之後,心理狀態產生失調的後遺症,症狀包括失眠、惡夢、性格大變等等。
既然提到了 PTSD,我們就順便來學一下其他症狀或疾病的縮寫:

OCD = Obsessive-Compulsive Disorder 強迫症
STD (STI) = Sexually Transmitted Diseases / Infections 性病
AS (AD) = Asperger Syndrome / Disorder 亞斯伯格症
ADD = Attention Deficit Disorder 注意力缺失症


創傷後心理壓力緊張癥候群 (PTSD: Stress and Resilience)






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