シャドーイング練習: The illusion that broken the internet - YouTubeで英語スピーキングを学ぶ
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Which of these faces appears angrier to you?
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Which of these faces appears angrier to you?
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The one on the left or the one on the right?
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Try to comment your answer before looking at anybody else's and go with your gut.
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These faces caused quite a stir when we shared them on social media,
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but it turns out that one of them is way more likely to be chosen.
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Because of the way your brain is split neurologically,
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it's the right side that processes the visual field you see on the left,
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and the left side of your brain that processes the visual field on the right.
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But the right side of your brain also contains the area involved in both facial recognition and the recognition of emotions.
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And because of that, your brain is better at processing
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and understanding emotions on the side of the face in your left visual field.
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As a result, the majority of people will see this face on the left as angrier.
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Because even though the faces are simply mirror images,
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your emotional recognition is able to process this side of the face more easily.
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Now, of course, some of you may feel the opposite,
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which says something interesting about you,
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but before we get to that,
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take a look at this soccer goal.
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I want you to take note of its speed and power.
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Now, I'm gonna play another version of it and you tell me which one you think was faster.
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As in, in which clip is the ball moving faster than the other.
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I'll play the first one again.
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And here's the second one again.
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If you said the first one felt faster,
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you're more likely from a culture that reads from left to right.
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And if you said the second one,
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you're more likely from a culture that reads from right to left.
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Of course, you might have said that they were both the same speed and just flip videos and you'd be right,
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But studies have shown that your culture and your upbringing implicate how you perceive the world.
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For example, Arabic speakers are more likely to interpret right-to-left goals as stronger,
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faster, and more beautiful than left-to-right ones,
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whereas Italians see it the opposite way.
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Your brain is always working with your history and context to shape your perception.
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Like, listen to this audio.
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It was a sunny day as a short of a girl used to talk.
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What did you hear?
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Chances are it mostly sounded like jumbled up noises with a faint hint of some words in there, potentially.
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Your brain is hard at work trying to predict and understand it,
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but now listen to this.
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It was a sunny day and the children were going to the park.
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After hearing this sentence, we can go back and listen to the original and it will sound completely different.
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It was a sunny day and the children were going to the park.
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Because your brain has more information,
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it can make accurate predictions and sense of what it's hearing.
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Speaking of information, did you know that
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if I put an object into your hand while blindfolded that your left hand would actually be better at discerning it?
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Because touch and spatial tasks have a strong role in the right hemisphere,
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studies show people are better at comparing shapes and objects in their left hand,
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and you're likely to understand that shape better in your mind compared to if you were using your right hand.
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Now imagining things in your mind is a special brain task and I want you to use it to picture an apple.
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What do you see?
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It can be with your eyes open or closed,
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but I want to know what happens for you when I say imagine an apple in your mind.
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Is it a vivid image of an apple,
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as real as seeing it in real life with its texture and imperfections,
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or maybe it's a less detailed version of an apple,
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or for some of you it may even just be an outline
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or a vague idea of what an apple could look like.
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Turns out that for around 4% of people, they see nothing.
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Literally.
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They are not able to conjure images in their mind on demand.
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In fact, a lot of people with this condition don't even realize they have it
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because they don't know that when people say picture something in your mind,
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they mean it literally.
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The condition is called aphantasia and it's one of the most fascinating things.
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But before we dive deeper into that and even more mind-boggling illusions,
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let's talk about something that everyone can perceive with today's sponsor,
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Henson, and that is a good shave.
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Let's be honest, most razors are kind of a scam,
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like cheap plastic, five-blade contraptions,
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endless subscription models, we've tried them all.
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They work just enough to pass,
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but they're like not actually good,
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and they definitely don't last.
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Which is why I switched to the Henson razor.
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It is literally made in an aerospace machine shop.
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Like the same place that made parts for a Mars rover.
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So it is in fact precise,
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but it's the results that are the most impressive.
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Henson actually teamed up with medical imaging companies to measure skin irritation.
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Not just guess, but actually measure.
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Their razor showed significantly less erythema,
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or redness and razor burn,
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compared to leading multi-blade drugstore razors.
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And they're building what might be the first clinical baseline of its kind for shaving which as a science nerd,
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I obviously think is pretty cool.
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See, most of their razors flex and bend and do a lot of tugging,
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especially as the blade wears out.
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Henson does the opposite.
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Their blade is held rigid,
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no flex, no gimmicks, just a single blade that glides through hair without tearing up your skin.
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It's engineered with a 30 degree shave angle,
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and the blade only extends 0.0013 inches,
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which is like 0.03 millimeters.
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Yeah, that's thinner than a human hair.
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It's one of those upgrades that feels minor until you try it,
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and then you're wondering like,
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why did we put up for worse for so long?
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You can visit hensonshaving.com slash ASAP
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or use the code ASAP at checkout to get 100 free blades with the purchase of a razor.
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Just make sure both items are in your cart for the coat to take effect.
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Now, back to how your mind works.
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Studies show that humans tend to fall on a scale of visualization,
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but how do we know what's actually going on in somebody else's mind?
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Like, how do we know we're not all seeing the exact same thing,
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but just describing it differently?
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Well, when a person with aphantasia is asked to visualize something on command during a brain scan,
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the visual parts of the brain don't activate in the same way as somebody with typical visualization.
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But something even more peculiar is that there is a way to trigger this brain activity in aphantasia,
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and that is with dreams.
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When we look at the brain of somebody dreaming,
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even when they have aphantasia,
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these visual areas light up,
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and they activate in basically the same way as a typical person's brain.
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Conversely, if you're reading an interesting or exciting book,
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the average person begins to sweat.
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Not like noticeably sweat, but if we're measuring you in a lab,
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we'll be able to pick up perspiration.
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Whereas people with aphantasia don't have this sweat response at all.
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Likely because they're not conjuring the imagery that is in turn creating the body's response.
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Now, if you're just finding out that you have aphantasia or that you fall on the lower end of the visual spectrum,
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don't stress, this is all just part of the normal range of human experience.
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In fact, aphantasia may be protective against certain mental disorders that are linked to negative imagery like PTSD.
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What's also really fascinating to me is
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that people with a fantasia are more likely to work in STEM fields while those with hyper fantasia,
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people who are really good at visualizing,
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are more likely to work in the arts.
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Speaking of visualizing apples, what color is this one?
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You likely said red despite the fact that it's actually gray,
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but your brain has a theory about apples
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and what color they should be and
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so your brain projects those ideas as opposed to accurately predicting the pixels on the screen.
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Kind of like if I show you this picture.
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Some of it's missing, and while you may not be conscious of it,
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if we put your brain into an MRI scanner right now,
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it would be lighting up in areas associated with the blanks,
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predicting and filling in the rest of the image.
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This reminds me a lot of the height of COVID,
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when you would meet a lot of people for the first time wearing masks,
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like you didn't actually know what their face looked like,
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and when you eventually saw it for the first time,
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it would be extremely trippy.
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Because you didn't didn't know their face,
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your brain was making a whole bunch of assumptions and predictions about how they looked,
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and once you actually saw the real thing,
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it likely didn't match those predetermined expectations.
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Now take a look at these faces.
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Can you tell me what emotion they are expressing?
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Do they look distressed and upset?
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Because all of them are actually faces of happiness.
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But without proper context, it's difficult for your brain to accurately predict their emotions.
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It's something you would expect humans should be really good at,
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but it turns out that face shape and contortions aren't always enough without more context and cues.
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When you look at this tennis player,
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you can see her happy in one moment after winning a point and disappointed in the other after losing one,
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but this is the exact same face superimposed on both bodies.
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your brain fills in the emotion based on the body posture.
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Your mind really is good at filling in information without you knowing.
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Take a look at this ticking clock for example.
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I want you to look away for a few seconds and then look back.
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I'll count you in to look back.
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Ready?
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3, 2, 1, look.
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When you first look back at the ticking hand,
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did it feel like the first tick was a tiny bit longer than the others?
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It turns out when you move your eyes from point A to point B quickly,
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your brain doesn't actually take in the information in between.
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it takes the image from point B and back fills that gap.
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So once your eyes land on the clock,
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your brain tells you that the image has been stable since it left the last spot,
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and as a result, that first tick can often feel longer than the rest.
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But even with static eyes,
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brain scans show about a 400 millisecond gap between when your unconscious brain processes information and when your conscious mind receives it.
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Your consciousness is kind of like a film,
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which seems continuous, but it's really made up of a series of 24 frames in every second.
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Ultimately, your consciousness is just pieces of information that have been filtered from your subconscious.
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Because there's so much information around you at all times,
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your conscious mind can't possibly process it all.
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And so your unconscious mind and all your different body sensors
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take in that information and basically strip it down to the most important stuff
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before it's actually sent to the conscious mind to be made understandable.
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Now, going back to the split faces,
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for those of you who see the right hand version as more angry,
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what does this mean?
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Well, there's no perfect answer.
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Old science might have said some people are more right-brained,
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some people are more left-brained,
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but that is a little outdated now.
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You really use your whole brain for most activities,
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despite some things being localized to different parts of your brain.
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Chances are, it's just another reminder of how all of our brains are unique
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and that the world as you know it may not be the same for other people.
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If you want to learn more about left brain versus right brain science and more cool illusions,
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Check out our latest Side Note podcast episode,
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I'll link it here on screen and in the description,
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or you can listen to it anywhere that you usually listen to podcasts.
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Thanks so much for watching.
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If you like these kind of videos,
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give it a like and subscribe,
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and we'll see you ASAP for some more science.
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Peace.
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このレッスンについて
このレッスンでは、視覚認識や感情の理解が私たちの思考や判断に与える影響について掘り下げていきます。YouTubeで英語学習を通じて、実際の発話を用いて英語のスピーキング練習を強化し、自分の目や耳がどのように動作しているかを理解しましょう。このレッスンでは、異なる文化的背景がどのように私たちの知覚に影響を与えるかを学ぶことができます。また、音声を聞く力や、聴解力を向上させるための練習も行います。
重要な語彙とフレーズ
- 感情認識 (emotional recognition)
- 視覚フィールド (visual field)
- 文化的背景 (cultural background)
- スピードとパワー (speed and power)
- 予測と理解 (predict and understand)
- 形と物体の比較 (comparison of shapes and objects)
- 脳の働き (function of the brain)
- 盲目の状態での触覚 (touch in a blindfolded state)
練習のコツ
このセクションでは、shadowing（シャドーイング）技法を使用して、自然なスピードとトーンでの英語の発音を改善します。最初に、動画を何度も再生して英語のフレーズを注意深く聞き、自分自身で繰り返すことをお勧めします。特に、感情がこもった部分や速度感を意識して練習することで、英語スピーキング練習の効果を高めることができます。
また、IELTS スピーキング対策として、文を聞いた後に自分の言葉で要約する練習を行ってみてください。これにより、情報の理解力を高めることができます。最後に、英語の発音を良くするためには、特に母音や子音の発音の練習を重点的に行うことが大切です。自信を持って、あなたの声を録音して聞き返すことで、さらなる改善点を見つけることができます。
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。