Prática de Shadowing: A Journey Through Your Nervous System - Aprenda a falar inglês com o YouTube
B2
Your nerves are literally everywhere around here.
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Your nerves are literally everywhere around here.
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We'll start from the most important ones,
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which are going through your spine and your brain.
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This thick cluster of nerves is called the central nervous system, or CNS.
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It's responsible for everything you do,
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from breathing to tapping your finger on the side of your smartphone while waiting until I get to the topic already.
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When a signal gets to the CNS in the brain from any part of the body,
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it sends back a command to react according to the situation.
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Pinch yourself now.
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Yeah, please do it.
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Ow!
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The place you've just pinched has a lot of neurons,
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just like anywhere else.
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When you pressed the skin,
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they flared up and sent the information about pain to the brain,
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which reacted by sending back a message that it hurt.
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It all happened in less than a millisecond,
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but the signal traveled several feet there and back.
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Let's go to the spinal cord now and carry out a little experiment.
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On the count of one,
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I'll sever the connections between the neurons here and you'll see what happens.
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Ready?
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One.
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See?
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You've just become limp from your waist down and can't feel anything in your legs.
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It's because your CNS can't figure out where they are.
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Okay, restoring the connections now, don't worry!
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This is why both your brain and spinal cord are naturally protected by bones,
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the skull and the vertebrae.
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Inside the spinal column, there's also cerebrospinal fluid,
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a liquid substance that protects the nerves,
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helps better conduct signals, and gets rid of weights.
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Ok, now let's take a closer look at all the rest of the nerves,
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starting with the ones at the tips of your fingers.
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Something that's not the CNS is called peripheral nervous system, or PNS.
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Will you kindly wave your hand now?
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Thanks!
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You've been able to do that because your brain consciously sent several million signals to the peripheral nerves in your shoulder,
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forearm, wrist, and hand.
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Together, they made a common effort to lift your arm,
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fix it in a certain position,
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and wave the hand from side to side.
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And responsible for this effort is your voluntary or somatic nervous system.
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Your eyebrows going up at this fact are also controlled by the same nerves.
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Did you count how many breaths you took while listening to my ramblings?
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a beat your heart had made.
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You shouldn't have.
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These things are regulated by your vegetative or involuntary nervous system.
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Your CNS sends signals to the periphery and tells your heart to beat,
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your respiratory system to let the air in and out,
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and even your bowels to digest the food you eat.
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Now, blow all the air out of your lungs and hold your breath for as long as you can.
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Okay, this will take some time,
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so fast-forward to the point where you start wanting to breathe in.
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Letting the air out and holding your breath are your conscious actions,
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so it's you who tells your brain to send signals to the breathing organs.
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But when you start lacking oxygen,
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it's already your brain that tells you to stop fooling around.
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Oh, I see you're becoming blue in the face.
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Please inhale already.
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And now I'll do something you'll have to forgive me for.
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Ow!
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Sorry, you dropped the phone because I sent a little shock through it.
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The point is, you subconsciously let your phone go as soon as you felt the pain.
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When I asked you to pinch yourself,
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you activated your voluntary nervous system,
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so you expected the pain and could continue pinching if you wanted to.
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This shock came unexpectedly, though,
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so your involuntary nervous system jolted in and made you move away from the threat ASAP.
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That said, your self-preservation instinct is something that's regulated by your nerves as well.
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Your body will try to save itself from harm even without your consent.
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Hey, what's that itch?
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You need to scratch it now.
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Thanks.
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Itching appears when there's something on or under your skin that doesn't belong there,
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like an insect or a bite it left.
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Nerves at the site flare up like beacons,
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and your brain sends signals to that spot.
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But when you scratch the itch,
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you feel two opposite things at once.
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Consciously, you experience relief because it's not itching anymore.
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On the subconscious level, though,
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your brain perceives scratching as pain and shifts your attention from the itch to the scratch instead.
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Basically, by scratching, you trick your brain into believing there are more important things to do than paying attention to the itch.
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Hey, is it me or is it a bit too hot here?
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Yeah, I see droplets of sweat on your forehead.
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When the outside temperature rises,
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your CNN reacts to the change.
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Billions of signals flash through your entire body.
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Sweat glands receive them in the blink of an eye and start working furiously.
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Sweat appears on your skin, cooling it down.
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I recommend going to the AC and turning it higher a bit, thank you.
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Hey, I said a bit,
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not all the way up.
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Ah, great, now you're shivering.
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Your brain is confused but is still working fast,
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reacting to the change of circumstances.
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Once again, it sends billions of signals to all the neurons in your muscles,
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telling them to start contracting as quickly as they can.
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By doing so, they create friction, and friction generates heat.
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Your heart starts beating faster too,
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by the way, pumping blood to your limbs to keep them from freezing.
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All this also makes you think sliding that counter up a notch is a good idea.
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On the topic of thinking,
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neurons are responsible for that too.
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For example, this is your first time watching this video video.
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You can't possibly know what I'm going to do or say next.
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Maybe I'll do a barrel roll.
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Or just end the whole video abruptly.
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Your brain is only now creating the neural connections necessary for you to remember what's coming up next.
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This is why you're still bearing with me.
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You want to know.
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But as soon as you've watched it until the end,
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the interest is gone, no matter how fascinating I am.
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Your CNS has created enough connections between the neurons,
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and if you start over,
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they will tell you what to expect.
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Still, the pathways are very basic.
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A simple example.
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What did I say exactly 3 minutes and 5 seconds into the video?
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You can't remember, because your neural connections aren't strong enough yet to give such details.
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But the more times you watch,
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the stronger and more numerous they become,
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and after a number of attempts,
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you'll be able to repeat the whole text word for word.
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The same happens when you learn some new skill, like roller skating.
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At first, you can't move even a single foot.
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Your brain encounters an unusual task and is all ablaze with signals it's sending every which way.
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You fall, but then you stand up and try once more.
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This time, several million neurons are already connected,
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and your CNS doesn't waste time creating new links.
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You fall again, and again, and again.
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But every time you rise and repeat,
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your brain gets more and more adapted,
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until finally, on your 5th,
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10th, or 50th attempt, you skate forward.
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The brain captures the moment you stop falling and creates strong neural connections to prevent you from repeating your previous mistakes.
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And soon enough, with more practice and links in your CNS,
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you'll be skating like a pro,
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wondering how you could be so clumsy before.
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Yet, the best thing about these connections is that they never completely go away.
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Even if you learned skating as a kid and then didn't put on the skates for 10 years,
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it'll take you just a couple of minutes to recall how it's done.
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So hey, if you're afraid to take that dusty guitar hanging on the wall for years, don't be.
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Go strum the strings, it'll all come back to you in a jiffy.
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Maybe not the calluses.
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Contexto & Antecedentes
O vídeo "A Journey Through Your Nervous System" apresenta uma explanação fascinante sobre o sistema nervoso humano, concentrando-se principalmente no sistema nervoso central (SNC) e no sistema nervoso periférico (SNP). O apresentador usa uma linguagem clara e acessível, tornando a complexidade do tema mais compreensível e estimulante para o público. Ao longo do vídeo, ele realiza demonstrações práticas para ilustrar como os nervos funcionam e como nossas respostas corporais são instantaneamente coordenadas pelo cérebro. Este contexto oferece uma excelente oportunidade para praticar a prática de conversação em inglês e aprimorar as habilidades de escuta e fala por meio de técnicas de shadowing em inglês.
Top 5 Frases para Comunicação Diária
- "Seu cérebro e a medula espinhal estão naturalmente protegidos por ossos." - Essa frase enfatiza a importância da proteção do sistema nervoso.
- "Quando um sinal chega ao SNC, ele envia uma ordem de reação." - Uma boa maneira de explicar como funciona a comunicação do corpo.
- "Agora, vamos olhar mais de perto todos os nervos." - Perfeito para apresentar um novo tópico de maneira envolvente.
- "O sistema nervoso periférico é responsável por muitas das nossas ações conscientes." - Indica a diferença entre o SNC e SNP, que é essencial para discutir o funcionamento do corpo.
- "Você pode sentir a dor porque seus neurônios estão ativos." - Uma frase que ajuda a entender a relação entre sensações e reações.
Guia Passo a Passo para Shadowing
Para aproveitar ao máximo o que foi discutido no vídeo e aprimorar suas habilidades de fala e compreensão, siga este guia de shadow speech:
- Escolha o Vídeo: Comece assistindo ao vídeo uma vez sem legendas para captar a essência do conteúdo.
- Ouça e Leia: Assista novamente, mas com legendas, para compreender as palavras e frases utilizadas. As legendas ajudam a conectar a fala ao texto.
- Repita em Voz Alta: Após entender o conteúdo, comece a replicar as frases pronunciadas pelo apresentador. Tente imitar a entonação e o ritmo da fala.
- Frases-Chave: Concentre-se nas 5 frases listadas acima. Pratique essas frases separadamente, até que você se sinta confortável.
- Contextualize: Tente usar as frases em suas próprias conversas diárias, seja com amigos ou em grupos de prática de conversação em inglês. Isso ajudará a fixar o aprendizado.
Ao adotar essa abordagem de aprender inglês com YouTube, você pode acelerar seu processo de aprendizagem e se tornar mais confiante ao se comunicar em inglês.
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.
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