跟读练习: The benefits of a good night's sleep - Shai Marcu - 通过YouTube学习英语口语
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It's 4 a.m., and the big test is in eight hours, followed by a piano recital.
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It's 4 a.m., and the big test is in eight hours, followed by a piano recital.
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You've been studying and playing for days, but you still don't feel ready for either.
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So, what can you do?
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Well, you can drink another cup of coffee and spend the next few hours cramming and practicing, but believe it or not, you might be better off closing the books, putting away the music, and going to sleep.
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Sleep occupies nearly a third of our lives, but many of us give surprisingly little attention and care to it.
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This neglect is often the result of a major misunderstanding.
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Sleep isn't lost time, or just a way to rest when all our important work is done.
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Instead, it's a critical function, during which your body balances and regulates its vital systems, affecting respiration and regulating everything from circulation to growth and immune response.
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That's great, but you can worry about all those things after this test, right?
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Well, not so fast.
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It turns out that sleep is also crucial for your brain, with a fifth of your body's circulatory blood being channeled to it as you drift off.
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And what goes on in your brain while you sleep is an intensely active period of restructuring that's crucial for how our memory works.
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At first glance, our ability to remember things doesn't seem very impressive at all.
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19th century psychologist Herman Ebbinghaus demonstrated that we normally forget 40% of new material within the first twenty minutes, a phenomenon known as the forgetting curve.
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But this loss can be prevented through memory consolidation, the process by which information is moved from our fleeting short-term memory to our more durable long-term memory.
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This consolidation occurs with the help of a major part of the brain, known as the hippocampus.
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Its role in long-term memory formation was demonstrated in the 1950s by Brenda Milner in her research with a patient known as H.M.
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After having his hippocampus removed, H.M.'s ability to form new short-term memories was damaged, but he was able to learn physical tasks through repetition.
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Due to the removal of his hippocampus, H.M.'s ability to form long-term memories was also damaged.
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What this case revealed, among other things, was that the hippocampus was specifically involved in the consolidation of long-term declarative memory, such as the facts and concepts you need to remember for that test, rather than procedural memory, such as the finger movements you need to master for that recital.
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Milner's findings, along with work by Eric Kandel in the 90's, have given us our current model of how this consolidation process works.
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Sensory data is initially transcribed and temporarily recorded in the neurons as short-term memory.
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From there, it travels to the hippocampus, which strengthens and enhances the neurons in that cortical area.
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Thanks to the phenomenon of neuroplasticity, new synaptic buds are formed, allowing new connections between neurons, and strengthening the neural network where the information will be returned as long-term memory.
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So why do we remember some things and not others?
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Well, there are a few ways to influence the extent and effectiveness of memory retention.
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For example, memories that are formed in times of heightened feeling, or even stress, will be better recorded due to the hippocampus' link with emotion.
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But one of the major factors contributing to memory consolidation is, you guessed it, a good night's sleep.
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Sleep is composed of four stages, the deepest of which are known as slow-wave sleep and rapid eye movement.
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EEG machines monitoring people during these stages have shown electrical impulses moving between the brainstem, hippocampus, thalamus, and cortex, which serve as relay stations of memory formation.
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And the different stages of sleep have been shown to help consolidate different types of memories.
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During the non-REM slow-wave sleep, declarative memory is encoded into a temporary store in the anterior part of the hippocampus.
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Through a continuing dialogue between the cortex and hippocampus, it is then repeatedly reactivated, driving its gradual redistribution to long-term storage in the cortex.
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REM sleep, on the other hand, with its similarity to waking brain activity, is associated with the consolidation of procedural memory.
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So based on the studies, going to sleep three hours after memorizing your formulas and one hour after practicing your scales would be the most ideal.
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So hopefully you can see now that skimping on sleep not only harms your long-term health, but actually makes it less likely that you'll retain all that knowledge and practice from the previous night, all of which just goes to affirm the wisdom of the phrase, "Sleep on it." When you think about all the internal restructuring and forming of new connections that occurs while you slumber, you could even say that proper sleep will have you waking up every morning with a new and improved brain, ready to face the challenges ahead.
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关于本课
在本课中，您将学习如何有效地利用睡眠来提升记忆力和学习效果。通过观看关于优质睡眠益处的YouTube视频，您将掌握与睡眠、记忆和大脑功能相关的重要内容。这将帮助您更好地理解英语学习过程中如何通过充足的睡眠来巩固所学知识，从而在雅思口语练习等场合表现得更加出色。
关键词和短语
- 睡眠（Sleep） - 生活中的重要部分，对记忆有重大影响。
- 海马体（Hippocampus） - 大脑中负责长时记忆形成的关键区域。
- 记忆巩固（Memory Consolidation） - 将短期记忆转化为长期记忆的过程。
- 非快速眼动睡眠（Non-REM sleep） - 与陈述性记忆编码相关的睡眠阶段。
- 快速眼动睡眠（REM sleep） - 与程序性记忆巩固相关的睡眠阶段。
- 遗忘曲线（Forgetting Curve） - 研究人类如何快速遗忘新知识的现象。
- 神经可塑性（Neuroplasticity） - 大脑在学习过程中形成新神经连接的能力。
练习技巧
在观看视频时，尝试使用影子跟读（shadowspeak）的方法。模仿讲者的语速和语调，将他们所讲的内容重复一遍。以下是一些具体的建议：
- 选择几段视频内容，先听一遍，确保理解后，再进行影子跟读。
- 保持注意力集中，注意音调变化和情感表达，这是提升口语流利度的重要部分。
- 如果可能，每天抽出时间，把视频中学到的新词汇和短语纳入与他人的对话中，尤其是在准备雅思口语练习时。
- 记录自己的声音，与原视频进行对比，找出需要改进的地方，以增强学习效果。
- 为了更好地消化和保持记忆，确保充分休息与睡眠。根据视频建议，在学习后及时休息，能更有效巩固知识。
通过这些技巧，将有助于提升您的英语水平，并确保在日常和考试中自信表达。别忘了，看YouTube学英语时，良好的睡眠习惯也能使您的学习之旅更加顺利！
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。