跟读练习: Narcolepsy Visually Explained - 通过视频学习英语口语
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57 句
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Narcolepsy is a chronic sleep -wake disorder which classically causes the tetrad of excessive daytime sleepiness,
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cataplexy which describes sudden muscle weakness that can lead to collapse, dream -like hallucinations, and sleep paralysis.
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Disease onset is usually in a person's 20s, although it can be diagnosed at any age.
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Importantly, narcolepsy isn't actually that rare, being the second commonest cause of disabling daytime sleepiness after obstructive sleep apnea.
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Its estimated prevalence is about 1 in 1000.
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Most of the cases of narcolepsy are sporadic.
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However, there are familial clusterings suggesting either a genetic or environmental link.
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The disease can be classified into type 1 and type 2 narcolepsy.
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Type 1 is caused by extensive neuron loss in the hypothalamus.
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These specific neurons produce orexin, also referred to as hypocretin,
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which is a neuropeptide that stabilises the sleep and wake stages and prevents inappropriate transitions between them.
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As a result, this type is associated with very low levels of orexin and severe symptoms including cataplexy.
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Type 2 has normal orexin levels, including most of the same symptoms, but doesn't have cataplexy.
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The process that destroys the orexin -producing neurons remains a bit of a mystery,
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but more than 98 % of people with type 1 narcolepsy have the HLA -DQB1 gene.
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This suggests there might be an autoimmune element to it.
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Let's discuss the main clinical features.
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All patients with narcolepsy have excessive daytime sleepiness.
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This can be associated with memory problems and attention issues, resulting in incidents like car crashes.
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The Epworth Sleepiness Scale can be used for evaluating excessive daytime sleepiness.
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People with narcolepsy are also prone to sleep attacks.
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These occur in inappropriate situations several times a day, even when fully involved in a task, and last between one minute and one hour.
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In addition to sleepiness, narcolepsy also characterised by disordered regulation of rapid eye movement sleep.
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REM sleep normally occurs only during the usual sleep period, and includes vivid story -like dreams,
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rapid eye movements, and paralysis of nearly all skeletal muscles except the muscles of respiration.
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In narcolepsy, REM sleep can actually occur at any time of the day, intruding into wakefulness.
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The most severe manifestation of this is cataplexy, which occurs in 60 % of patients.
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This is a generalized muscle weakness, leading to partial or complete collapse.
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It is most frequently triggered by emotional stimuli such as laughter, excitement, or anger.
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Speech may be impaired, vision might be blurred, and respiration might become irregular during the attack.
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Many people with narcolepsy also complain of sleep paralysis, which occurs at the borders of sleep, typically when waking up.
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This is often associated with dreamlike and often disturbing hallucinations.
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Hallucinations that occur at the onset of sleep are referred to as hypnagogic hallucinations,
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and those that occur on awakening are referred to as hypnopompic hallucinations.
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Typical hallucinations might include the sense that a threatening stranger is in the bedroom, or that one's being attacked by animals.
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Moving to investigations, the clinical history of narcolepsy often makes the diagnosis apparent,
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but it's essential to confirm it with overnight polysonography, followed by multiple sleep latency tests the next day.
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The PSG ascertains sleep quality and can identify coexisting causes of excessive daytime sleepiness such as OSA.
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In people with narcolepsy, it might show fragmented light sleep and an early transition into REM sleep.
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The MSLT is performed the day after.
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In this test, the patient is encouraged throughout the day to fall asleep every 2 hours for 20 minutes.
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Given the opportunity to nap, nap, people with narcolepsy usually fall asleep in less than 8 minutes,
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whereas healthy people generally fall asleep in more than 15 minutes.
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In addition, people with narcolepsy will have REM sleep during at least two of these daytime naps.
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The management of narcolepsy is based on lifestyle modifications and medications to treat excessive daytime sleepiness and cataplexy.
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Non -pharmacological approaches should include improving sleep hygiene by adopting a relatively strict sleep schedule and avoiding alcohol,
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smoking, late late night exercise and sleep deprivation.
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Excessive daytime sleepiness can be managed with CNS stimulants.
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One first -line medication is modafinil.
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Other medications, including dexamphetamine and methylphenidate like Ritalin,
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have evidence, but a lack of head -to -head trials makes it difficult to compare efficacy between drugs.
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Cataplexy is usually managed with sodium oxabate or bitosaline.
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These reduce the frequency of attacks per week second -line agents such as serotonin noradrenaline reuptake inhibitors
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or tricyclic antidepressants can also be considered.
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To remember the classic triad of clinical symptoms for narcolepsy, remember CHESS features, including cataplexy,
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hallucinations, excessive somnolence, and sleep paralysis.
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If you like this mnemonic, then check out some of my other videos in this playlist.
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本课的词汇与口语要点
这节 C1 级别的口语课以视频“Narcolepsy Visually Explained”为素材。 视频中反复出现的词有：sleep, narcolepsy, sleepiness, daytime, cataplexy。 这段视频共有 57 个句子、767 个单词可供跟读。 讲话部分时长为 5:51。 说话人语速平稳，每分钟约 131 个词，很适合跟读。 只有 68% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中最难的 15 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| narcolepsy 名词 | /ˈnɑː(ɹ)kəˌlɛpsi/ | 發作性睡病 /发作性睡病, 發作性嗜睡病 /发作性嗜睡病 |
| sleepiness 名词 | 睡意 | |
| daytime 名词 | /ˈdeɪtaɪm/ | 白天, 日間 /日间 |
| cataplexy 名词 | /ˈkætəˌplɛksi/ | 猝倒, 昏倒 |
| hallucination 名词 | /həˌluːsɪˈneɪʃən/ | 幻覺 /幻觉, 幻想 |
| paralysis 名词 | /pəˈɹæləsəs/ | 癱瘓 /瘫痪, 麻痹 |
| neuron 名词 | /ˈn(j)ʊɹɑn/ | 神經細胞 /神经细胞, 神經元 /神经元 |
| symptom 名词 | /ˈsɪm(p)təm/ | 症狀 /症状, 病徵 /病征 |
| respiration 名词 | /ɹɛspɪˈɹeɪʃən/ | 呼吸, 呼吸作用 |
| antidepressant 名词 | 抗抑鬱藥 /抗抑郁药 | |
| ascertain 动词 | /ˌæsəˈteɪn/ | 查明 |
| autoimmune 形容词 | /ˌɔːtəʊɪˈmjuːn/ | 自身免疫的 |
| awaken 动词 | /əˈweɪkən/ | 喚醒 /唤醒, 叫醒 |
| classically 副词 | 拟古地, 古典主义地 | |
| classify 动词 | /ˈklæs.əˌfaɪ/ | 分類 /分类, 分等 |
视频中出现的短语动词
| 单词 | 发音 | 释义 |
|---|---|---|
| check out 动词 | 退房 | |
| wake up 动词 | /ˌweɪk ˈʌp/ | 醒, 醒來 /醒来 |
需要注意的发音
- “th” 音: methylphenidate /ˌmɛθ əlˈfɛn ɪˌdeɪt/, threaten /ˈθɹɛt.n̩/
- “sh” 和 “zh” 音: hallucination /həˌluːsɪˈneɪʃən/, respiration /ɹɛspɪˈɹeɪʃən/, deprivation /ˌdɛp.ɹɪˈveɪʃən/, manifestation /ˌmænɪfɛˈsteɪʃən/, modification /ˌmɑdɪfɪˈkeɪʃən/
- 长单词——注意重音位置: narcolepsy /ˈnɑː(ɹ)kəˌlɛpsi/, cataplexy /ˈkætəˌplɛksi/, hallucination /həˌluːsɪˈneɪʃən/, paralysis /pəˈɹæləsəs/, respiration /ɹɛspɪˈɹeɪʃən/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: deprivation /ˌdɛp.ɹɪˈveɪʃən/, obstructive /əbˈstɹʌk.tɪv/, prevalence /ˈpɹɛvələns/, vivid /ˈvɪvɪd/, evaluate /ɪˈvaljʊeɪt/
- 词尾辅音 — 要读清楚，后面不要加元音: paralysis /pəˈɹæləsəs/, onset /ˈɒnˌsɛt/, inappropriate /ˌɪnəˈpɹoʊpɹi.ət/, coexist /ˌkoʊ.ɪɡˈzɪst/, diagnose /ˈdaɪ.əɡˌnoʊs/
- /r/ 和 /l/ 的区别: narcolepsy /ˈnɑː(ɹ)kəˌlɛpsi/, paralysis /pəˈɹæləsəs/, dreamlike /ˈdɹimlaɪk/, generalize /ˈd͡ʒɛn.(ə.)ɹə.laɪz/, noradrenaline /nɔːɹəˈdɹɛnəlɪn/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
- 录下自己的声音并与原声对比，特别注意 narcolepsy, sleepiness, daytime 这类单词。
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。