シャドーイング練習: Why Your Brain Blinds You For 2 Hours Every Day - 動画で英語スピーキングを学ぶ

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The world you see is not real – you're not living in this very moment that you are experiencing and nothing is like it seems.

It turns out your brain constructs your reality as you are experiencing it, it edits your memories as they happen, it lives in totally different time spheres and tells you a story about the world that feels real.

What's going on and who is really in control of your life?

The Gap Between Reality and You Vision is maybe our main source of information about the world – but in reality we don’t really see that much.

Only a thumbnail sized area of your visual field is in high resolution, while the rest is out of focus.

If it doesn’t feel like this, that’s because it is made up by your brain – using a pretty neat trick.

Each second your eyes make 3 to 4 sudden jerky movements, saccades, of 50 milliseconds, focusing from one point to another.

Scanning your environment to get different sharp images that your brain then edits together.

During a saccade your brain shuts down your vision so you don’t see a wild motion blur.

This means that each day, for around 2 hours, you're completely blind.

If you could actually see what your eyes see, it would look something like this: brrrr brrrrrrrrr Instead your brain fills this time with its best guesses of what happened during the blackness.

But it does way more – it turns out that you're not really experiencing time correctly.

What's really happening when you are stirring milk into a cup of coffee?

As the spoon hits the ceramic, light reflects off it and hits your eyes after 1.3 nanoseconds.

The ceramic vibrates and creates a shockwave of air molecules that travels to your ear in 1.2 milliseconds.

Heat is picked up by fibres in your fingers that send a signal to your brain in 50 milliseconds.

Three very different inputs, all processed in your brain at different times.

You don’t experience them separately but as one smooth, simultaneous and connected moment.

Your brain takes a moment to process and then invents a reality, a present moment that's not real.

What you feel is “now” is in fact a selectively edited version of the past.

You really only consciously experience the world 0.3 to 0.5 seconds after things happened.

Except this is also not really true.

Because your brain is editing time and space way more than that.

And it makes decisions completely out of your conscious control.

You Are Living in the Past!

No, future!

No, a made up future!

Your present, what you experience right now is kind of the future.

Imagine for a second that you are a table tennis pro.

In pro table tennis balls woosh around at 25 meters per second, which is pretty fast, so let’s slow down time.

Light passes from the ball to your eye in nanoseconds, is converted into electrical impulses that reach your brain to be processed after 100 milliseconds.

Meanwhile, the ball travels 2.5 meters through the air, the length of the table.

If your brain showed you the past, where the ball was 100 milliseconds ago, it would hit you before you could react.

So instead your brain takes its location, speed and direction and calculates where the ball should be in the future – by the time the information reaches you.

And then it creates a fictional version of it.

This is what you see, in your fake present: a fake ball, that's somewhere else.

But you don’t need to just see the ball, you want to smash it back hard.

If you acted now and started swinging your arm you'd miss by a mile – things are just too fast.

So before the ball even touches your opponent's bat, your brain starts predicting where it will likely be in space after they hit.

Based on the other player's posture and your table tennis experience.

But as it can’t be sure if it will be correct, it prepares multiple different responses.

Maybe the ball will be here, or here, or even here.

To be ready for all of these scenarios your brain sends preprogrammed orders to the muscles you need to jump left, right or up.

Telling them to be ready for any of them at a moment's notice.

For a short moment multiple ghost versions of you exist, all equally real inside your brain.

And then, as your opponent is about to lay into the swing, your brain decides on a single future that it thinks is most likely.

All but one ghost are deleted.

You only ever experience the ghost that won, never the potential ones.

The order to the muscles to act out the winning movement is triggered, even before the ball is hit back to you.

You are totally oblivious to this – by the time you consciously see the ball coming at you and decide to hit it in a particular way, your body has already hit it back.

In reality your brain already made all the decisions.

Your conscious experience is nothing more than an invented future, a prediction based on the information your brain received a fraction of a second ago.

This is not just true for extreme sports like uhm ... table tennis, but also for walking.

Walking is Time Travel After your game you are walking back home, seemingly choosing your path and reacting to things.

Meanwhile your brain is operating in three different time spheres at once.

It processes the sensory feedback of the past, it calculates the current state of your body and it predicts your future.

Because walking is intense.

Before the signal from your foot touching the ground has even reached the brain, it's already sent the order to your foot to make the next step – and it has already calculated the muscle patterns for the next two.

But what if something truly catastrophic happens?

There's a banana peel and you step on it and slip – how did it get here? Listen, don’t worry about it.

It turns out your brain is ready for this.

So far we spoke of your “brain” making decisions for you but this is not really true.

You don’t have a central control room where the world comes together.

In reality different parts of your body are aware of different things, at different times.

Your spinal cord usually knows stuff before your brain.

And even within your brain different regions process the same event at different speeds and make independent decisions.

As your foot catches the peel, the gyroscope inside your ears notices a sudden change of your position in space.

It submits this information to your brain stem and spinal cord, the “things must happen quickly” section of your body.

They immediately trigger emergency recovery patterns and send orders to different muscle groups.

Within 200 milliseconds pre-programmed sequences activate to catch your fall.

Your arms shoot out, your other leg stiffens to support your weight, your core muscles contract to stabilise you.

100 milliseconds later, when you become aware that you are tripping, your body is already recovering.

You are only just now catching up.

Ok, so we've learned that your brain is constantly predicting reality around you, makes decisions about the best way to act and then shows you an edited version.

Which totally makes sense, would you really want to be in charge of that?

But your brain is not just predicting the external world.

Right now it's predicting a way more complex thing: You.

Are YOU just a Prediction of your Brain?

Why do you feel about the world the way you do?

Your sense of hunger, your energy level and especially your emotions are not just objective reactions to what state you are in, but predictions.

Your brain's prediction of what you'll need soon or need to be ready for.

You are probably used to getting food or going to bed roughly around the same time – and as time approaches your brain releases hormones to prepare you.

A self fulfilling prophecy.

You get hungry or tired because your brain assumes this is the time when this is needed.

This is the most striking thing about your emotions.

They aren't just reactions to the outside world – they're predictions.

When you go to a party, your brain isn't waiting to see how you feel once you get there, based on how the party actually is.

It analyses your experiences of past parties and who it expects to be there – maybe close friends you feel safe around, maybe people you don’t know who are a less socially secure bet.

Maybe your brain remembers a party where you felt anxious, and that experience stuck.

This could be pretty annoying – if your brain predicts anxiousness, it adjusts your heart rate, hormone levels and muscle tensions before you even enter the room.

It prepares your body for anxiety, making you actually feel anxious.

Which then confirms the brain's prediction and gets saved for future reference.

Does this make you feel like you are just along for the ride, forced to experience whatever predictions your brain feeds you?

Thankfully it’s not quite like that.

Your conscious self is obviously not the decider of most things as you go through your day.

But that is not what it's good at anyway.

Your brain and all of these different organ systems decide a lot of things, but they are more like butlers taking care of all the busy work.

You may not be in the driver's seat, but you are the passenger that decides where to go.

What your conscious self is good at is long term planning and abstract thinking.

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It's a storyteller that tells the story of your life to your brain and to yourself – wherever the edges of these overlapping entities melt into each other.

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You are able to see the big picture that your internal prediction machine could never begin to grasp.

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You are the part of you that can edit and write new predictions into the system.

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Sometimes you and your brain disagree on what is correct – but in the end you are the person in power, who tells the story about who you are in this world.

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A story so convincing that you experience it as undeniable reality.

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And as a happy accident, your conscious self is great at being happy about ice cream, fascinated by internet videos and thinking deeply about pokemon types.

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コンテキストと背景

この動画では、私たちの脳が現実をどのように構築し、経験をどのように編集するかについて探求しています。視覚情報は私たちの現実の主要な情報源ですが、実際には私たちはあまり見えていません。脳は周囲の環境をスキャンし、瞬時に異なるシャープな画像を編集して、自分にとってのストーリーを形成します。このプロセスがどのように行われるのかを理解することは、時間や空間をどのように認識しているのか、そしてそれが私たちの行動にどのように影響するのかを知る上で重要です。

日常会話のためのトップ5フレーズ

「実際には、私たちは視覚を正確に体験していない。」 - 脳が情報を処理する過程を意識するためのフレーズ。
「私たちの現実は過去の編集版である。」 - 現在を体験することの難しさを示しています。
「一瞬で未来を予測する。」 - 動きや状況に対する脳の迅速な反応についての発見。
「動的な環境での適応が必要だ。」 - 日常的な状況における私たちの脳の働きについて。
「私たちは常に過去を参照している。」 - 脳が選択された現実をどう作り出すかを表現しています。

段階的シャドウイングガイド

この動画を効果的に学ぶために、次のステップに従ってください。

動画を見ながら聴く: 初めて視聴する時は、内容を理解することに集中してください。要点を知ることで、後のシャドウイングが容易になります。
フレーズを短く区切る: 特に難しいと感じるフレーズを選び、それを何度も繰り返してみてください。「私たちの現実は過去の編集版である」というフレーズに注目し、音声を聴いてみましょう。
シャドウイング: フレーズを聴いた後、すぐに同じ言葉を声に出して言ってみてください。英語スピーキング練習の技術として、声のトーンや発音を意識しましょう。
録音してみる: 自分の声を録音して、元の音声との違いを確認します。これにより、改善内容が明確になります。
IELTSスピーキング対策に活用: 日々の練習にこの動画の内容を取り入れながら、国際的な試験に向けた準備も行いましょう。

この方法を使って、YouTubeで英語学習を進めると同時に、シャドウスピーチのスキルを向上させることができます。反復練習を重ねることで、より自然な会話力を身につけましょう。

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	is made · is picked · is converted
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	has already hit · has even reached · we've learned

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: Why Your Brain Blinds You For 2 Hours Every Day - 動画で英語スピーキングを学ぶ

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コンテキストと背景

日常会話のためのトップ5フレーズ

段階的シャドウイングガイド

この動画の文法

シャドーイングとは？英語上達に効果的な理由