中級 158998 タグ追加 保存
動画の字幕をクリックしてすぐ単語の意味を調べられます!
単語帳読み込み中…
字幕の修正報告
Whether at school or at the office, the times that you need your brain at its sharpest are
inevitably spent in cramped, crowded spaces, where air flow is…must keep brain awake...do the thing
Hey everybody, this is Matt Lieberman filling in for DNews.
Researchers and civilians alike have long been aware of the harmful effects of high levels of carbon dioxide on the brain.
For example, an environment where the air contains 100,000 parts per million of CO2 can render an adult unconscious.
But few had considered what low amounts of carbon dioxide could do to the human brain.
It turns out, even levels as low as 1,000 parts per million can reduce the brain’s ability to focus and function properly.

And considering that we produce carbon dioxide everytime we exhale, that’s a big old problem.
The longer we stay in an unventilated space, especially with multiple people,
the higher the concentration of carbon dioxide in the atmosphere.
Now, researchers at the Lawrence Berkeley National Laboratory drew inspiration from a 2012 study in Budapest,
the first on record to examine the negative effects of small environments with CO2 levels of 3000 parts per million.
Now, the prevailing theories in the field of human concentration
were focused exclusively on the effects of volatile organic compounds, or VOCs, on the human brain.
These are gases emitted from building materials and personal care products found in a work environment.
However, they never accounted for the level of carbon dioxide that can build up in a crowded space over time.
So what’s a researcher with a scientific get to do?
Give it a good, long scratch with a sweet little study.
Check this out: Berkeley’s William Fisk collaborated with SUNY Upstate Medical University’s Usha Satish
to see how well a small group of participants -- 22 to be exact --
could perform a test called the Strategic Management Simulation in an environment
containing 600, 1000, and then 2500 parts per million of CO2.
What is the Strategic Management Simulation?
It’s a series of hypothetical scenarios that participants must develop strategic responses for.
Think Dungeons and Dragons without the dungeons,dragons, or dice. Or sword of magic.
Participants in the SMS were then graded on nine different criteria,
ranging from Focus, Initiative, Information Usage, and Basic Strategy.
The results are striking, to say the least.
The impact of CO2 at 2500 parts per million on the human brain
is the equivalent of a blood alcohol level of 0.08,
the legal limit to drive in the majority of the US.
So how common are environments containing 2500 parts per million or more of CO2?
Well, Fisk told Vox.com that the majority of offices are below 1000 parts per million,
but a crowded conference room can easily exceed the 2500 threshold in the span of 30 minutes.
But of course these findings need to be replicated on a larger scale to be authenticated.
Until then, however, let’s all crack a collective window, shall we?
So what do you think about the effects of Carbon Dioxide on the brain?
Let us know down in the comments below. I’m Matt Lieberman filling in for DNews.
You can find more of my videos over at SourceFed and SourceFedNERD.
Please like the video and subscribe to the channel. Thanks for watching.
コツ:単語をクリックしてすぐ意味を調べられます!

読み込み中…

読み込み中…

教室がいかに脳の動きを遅くするか(How Classrooms Slow Your Brain Down)

158998 タグ追加 保存
Gisele Sung 2015 年 2 月 24 日 に公開    VoiceTube Japan 翻訳    Shoji Kawahara チェック
お勧め動画

コメント

読み込み中…
  1. 1. クリック一つで単語を検索

    右側のスプリクトの単語をクリックするだけで即座に意味が検索できます。

  2. 2. リピート機能

    クリックするだけで同じフレーズを何回もリピート可能!

  3. 3. ショートカット

    キーボードショートカットを使うことによって勉強の効率を上げることが出来ます。

  4. 4. 字幕の表示/非表示

    日・英のボタンをクリックすることで自由に字幕のオンオフを切り替えられます。

  5. 5. 動画をブログ等でシェア

    コードを貼り付けてVoiceTubeの動画再生プレーヤーをブログ等でシェアすることが出来ます!

  6. 6. 全画面再生

    左側の矢印をクリックすることで全画面で再生できるようになります。

  1. クイズ付き動画

    リスニングクイズに挑戦!

  1. クリックしてメモを表示

  1. UrbanDictionary 俚語字典整合查詢。一般字典查詢不到你滿意的解譯,不妨使用「俚語字典」,或許會讓你有滿意的答案喔