シャドーイング練習: TOEFL Listening Practice | Lecture | Poor Contrast Sensitivity - 動画で英語スピーキングを学ぶ

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thousands of people worldwide suffer from a condition called poor contrast sensitivity.
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Contrast sensitivity is the crispness of our vision.
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It enables us to see objects or colors that do not clearly stand out from their backgrounds.
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While this condition can be treated, correction involves wearing glasses or contact lenses or having surgery.
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However, recent research may have provided another solution.
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David Sanderson reports.
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People with poor contrast sensitivity have problems with night driving, including seeing pedestrians walking along poorly lit streets.
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They need extra light to read because they tire easily,
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and they may even stumble in the street when they fail to distinguish a step or curb of a similarly colored sidewalk.
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Poor contrast sensitivity affects the elderly and those suffering from amblyopia, or lazy eye.
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Recently, neuroscientists at the University of Rochester in New York used video games to carry out experiments on poor contrast sensitivity.
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Professor Frank Alexander explains.
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The images we see are processed by the brain into information about our environment.
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Neuroscientists have been studying how certain video games can enhance your eyesight and consequently, brain function.
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In this particular experiment,
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researchers studied two groups of college students who both played video games for 50 hours during a nine -week course.
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One group played action -packed shooter games such as Unreal Tournament and Call of Duty,
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which require precise, visually -guided aiming at targets, while the other played less intense puzzle games like Sims.
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The results indicated that gamers who play shooter games experienced a 43 to 58 % improvement in their contrast sensitivity,
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while those who played non -action games showed none.
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Fast action video games improved the student's spatial resolution or ability to see small objects,
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even when closely packed together on a cluttered screen. In fact, the students who played action games were able to distinguish such
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objects even in the chaotic visual scenes of a game because gaming sharpens vision.
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It also assists the brain in processing situations that are visually complex,
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allowing a player to keep track of multiple items simultaneously while processing information that is constantly being updated or changed.
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Poor contrast sensitivity was once considered impossible to change naturally, that is, without wearing glasses or undergoing surgery.
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This research confirms that it can be improved.
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Consequently, the brain makes better use of the visual information it receives.
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Interestingly, games that best improved contrast sensitivity were unpredictable and required aiming at various targets while distinguishing friend from enemy before shooting.
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This demands consistent alertness and analysis of what's happening on screen.
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But was the improvement temporary or permanent?
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This was crucial to the research.
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The subjects were tested two days after the gaming period, after six months, and then two years later.
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The results confirmed the initial findings video games extend our visual system to its limits
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and the brain adapts itself accordingly the effects remain even two years after the initial gaming period is over
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these findings will be applied to contrast sensitivity in people suffering from amblyopia
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thus helping to give them stereo vision so
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that both eyes are working together and also to the elderly whose contrast sensitivity has deteriorated with age.
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In addition, the research is relevant to jobs requiring the fast, accurate processing of visual stimuli such as piloting a plane,
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scanning x -rays, and screening luggage at airports.
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Scientists are also interested in how video games can improve learning,
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so that one day developers can create games that intrinsically enhance memory, perception, and other mental capabilities.
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Number 1.
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What is poor contrast sensitivity?
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Number 2.
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What was the purpose of the research?
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Number 3.
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What was the main finding of the research study?
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Number 4.
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Which feature of the games did researchers identify as most significant?
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Number 5.
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How can this research be applied outside the medical field?
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Contrast sensitivity is the crispness of our vision.
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It enables us to see objects or colors that do not clearly stand out from their backgrounds.
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And they may even stumble in the street when they fail to distinguish a step or curb of a similarly colored sidewalk.
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Neuroscientists have been studying how certain video games can enhance your eyesight and consequently brain function.
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The results indicated that gamers who play shooter games experienced a 43 % to 58 % improvement in their contrast sensitivity.
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Consequently, the brain makes better use of the visual information it receives.
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Interestingly, games that best improved contrast sensitivity were unpredictable and required aiming at various targets while distinguishing friend from enemy before shooting.
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Poor contrast sensitivity affects the elderly and those suffering from amblyopia, or lazy eye.
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These findings will be applied to contrast sensitivity in people suffering from amblyopia,
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thus helping to give them stereo vision so that both eyes are working together.
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Thank you.
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Thank you.
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You Thank you.
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We'll be right back so

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このレッスンの語彙とスピーキングのポイント

このスピーキングレッスンは、動画「TOEFL Listening Practice」を教材にしています。 繰り返し出てくる語は次のとおりです：sensitivity, contrast, brain, poor, visual。 この動画には、シャドーイング用の文が66文、単語が794語あります。 音声の長さは10:27です。 話す速さはゆっくりで、1分あたり約76語です。一つ一つの音をまねる余裕があります。 英語の頻出3,000語に含まれる単語は76%だけなので、語彙は難しめです。

この動画の重要語彙

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語発音意味
suffer 動詞/ˈsʌfɚ/被る
distinguish 動詞/dɪˈstɪŋ.ɡwɪʃ/区別する
elderly 形容詞/ˈɛldɚli/年配, やや年とった
shooter 名詞/ˈʃuːtəː/射手
confirm 動詞/kənˈfɝm/確認する
experiment 名詞/ɪkˈspɛɹ.ə.mənt/実験
indicate 動詞/ˈɪndɪˌkeɪt/示す, 指す
similarly 副詞/ˈsɪm.ə.lə.li/同様に
lazy 形容詞/ˈleɪ̯zi(ː)/ナマケモノ, 怠惰な
researcher 名詞/ˈɹiˌsɝ.t͡ʃɚ/研究員, 研究者
curb 名詞/kɝb/縁石
sidewalk 名詞/ˈsaɪdwɔk/歩道, 舗道
unpredictable 形容詞予測できない, 先が見えない
gamer 名詞/ˈɡeɪ̯mə/ゲーマー
naturally 副詞/ˈnæt͡ʃ.(ə.)ɹə.li/勿論

動画に出てくる句動詞

単語発音意味
carry out 動詞/ˈkæ.ɹi aʊt/行う, 実行する

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
現在完了進行形 have/has been + -ing — 以前に始まり今も続いている動作have been studying
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can be treated · are processed · being updated
関係詞節 who / which + 節 — 人や物について情報を加えるstudents who both · those who played · students who played

注意したい発音

  • 「sh」と「zh」の音: contrast /kənˈt(ʃ)ɹæst/, distinguish /dɪˈstɪŋ.ɡwɪʃ/, shooter /ˈʃuːtəː/, crucial /ˈkɹuː.ʃəl/, perception /pɚˈsɛpʃ(ə)n/
  • 長い単語（アクセントの位置に注意）: sensitivity /ˌsɛn.səˈtɪv.ə.ti/, consequently /ˈkɑnsɪˌkwɛntli/, experiment /ɪkˈspɛɹ.ə.mənt/, similarly /ˈsɪm.ə.lə.li/, visually /ˈvɪzju.əli/

日本語話者が苦手な音：

  • /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, crucial /ˈkɹuː.ʃəl/, poorly /ˈpʊɹ.li/, accordingly /əˈkɔɹ.dɪŋ.li/
  • /v/ — /b/ にならないように、上の歯を下唇に当てる: sensitivity /ˌsɛn.səˈtɪv.ə.ti/, visually /ˈvɪzju.əli/, involve /ɪnˈvɑlv/, developer /dɪˈvɛləpɚ/
  • /f/ — 「フ」ではなく、上の歯と下唇で出す: suffer /ˈsʌfɚ/, confirm /kənˈfɝm/

この動画での練習方法

  1. まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
  2. 通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
  3. 自分の声を録音して元の音声と比べます。suffer, distinguish, elderlyなどの単語に特に注意しましょう。

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 →