【正文】 第一篇：ted演講稿 我們?yōu)槭裁匆哂⑽膖ed演講稿 我們?yōu)槭裁匆哂⑽臍g迎來到聘才網(wǎng)，以下是聘才小編為大家搜索整理的，歡迎大家閱讀。ted演講稿 我們?yōu)槭裁匆哂⑽暮喗椋阂簧?，我們有三分之一的時間都在睡眠中度過。關(guān)于睡眠，你又了解多少?睡眠專家Russell Foster為我們解答為什么要睡覺，以及睡眠對健康的影響。What I39。d like to do today is talk about one of my favorite subjects, and that is the neuroscience of , there is a sound(Alarm clock)aah, it workeda sound that is desperately, desperately familiar to most of us, and of course it39。s the sound of the alarm what that truly ghastly, awful sound does is stop the single most important behavioral experience that we have, and that39。s you39。re an average sort of person, 36 percent of your life will be spent asleep, which means that if you live to 90, then 32 years will have been spent entirely what that 32 years is telling us is that sleep at some level is yet, for most of us, we don39。t give sleep a second throw it really just don39。t think about so what I39。d like to do today is change your views, change your ideas and your thoughts about the journey that I want to take you on, we need to start by going back in time.“Enjoy the honeyheavy dew of slumber.” Any ideas who said that? Shakespeare39。s Julius , let me give you a few more quotes.“O sleep, O gentle sleep, nature39。s soft nurse, how have I frighted thee?” Shakespeare again, fromI won39。t say itthe Scottish play.(Laughter)From the same time: “Sleep is the golden chain that ties health and our bodies together.” Extremely prophetic, by Thomas Dekker, another Elizabethan if we jump forward 400 years, the tone about sleep changes is from Thomas Edison, from the beginning of the 20th century.“Sleep is a criminal waste of time and a heritage from our cave days.” Bang.(Laughter)And if we also jump into the 1980s, some of you may remember that Margaret Thatcher was reported to have said, “Sleep is for wimps.” And of course the infamouswhat was his name?the infamous Gordon Gekko from “Wall Street” said, “Money never sleeps.”What do we do in the 20th century about sleep? Well, of course, we use Thomas Edison39。s light bulb to invade the night, and we occupied the dark, and in the process of this occupation, we39。ve treated sleep as an illness, 39。ve treated it as an most now, I suppose, we tolerate the need for sleep, and at worst perhaps many of us think of sleep as an illness that needs some sort of a our ignorance about sleep is really quite is it? Why do we abandon sleep in our thoughts? Well, it39。s because you don39。t do anything much while you39。re asleep, it don39。t don39。t you don39。t have , most of us so therefore it39。39。s a plete waste of time, right? , sleep is an incredibly important part of our biology, and neuroscientists are beginning to explain why it39。s so very let39。s move to the , here we have a is donated by a social scientist, and they said they didn39。t know what it was, or indeed how to use it, so(Laughter) I borrowed don39。t think they .(Laughter)The point I39。m trying to make is that when you39。re asleep, this thing doesn39。t shut fact, some areas of the brain are actually more active during the sleep state than during the wake other thing that39。s really important about sleep is that it doesn39。t arise from a single structure within the brain, but is to some extent a network property, and if we flip the brain on its backI love this little bit of spinal cord herethis bit here is the hypothalamus, and right under there is a whole raft of interesting structures, not least the biological biological clock tells us when it39。s good to be up, when it39。s good to be asleep, and what that structure does is interact with a whole raft of other areas within the hypothalamus，thelateralhypothalamus，the ventrolateral preoptic of those bine, and they send projections down to the brain stem brain stem then projects forward and bathes the cortex, this wonderfully wrinkly bit over here, with neurotransmitters that keep us awake and essentially provide us with our sleep arises from a whole raft of different interactions within the brain, and essentially, sleep is turned on and off as a result of a range of where have we got to? We39。ve said that sleep is plicated and it takes 32 years of our what I haven39。t explained is what sleep is why do we sleep? And it won39。t surprise any of you that, of course, the scientists, we don39。t have a are dozens of different ideas about why we sleep, and I39。m going to outline three of first is sort of the restoration idea, and it39。s somewhat , all the stuff we39。ve burned up during the day, we restore, we replace, we rebuild during the indeed, as an explanation, it goes back to Aristotle, so that39。s, what, 2,300 years 39。s gone in and out of 39。s fashionable at the moment because what39。s been shown is that within the brain, a whole raft of genes have been shown to be turned on only during sleep, and those genes are associated with restoration and metabolic there39。s good evidence for the whole restoration about energy conservation? Again, perhaps essentially sleep to save , when you do the sums, though, it doesn39。t really pan you pare an individual who has slept at night, or stayed awake and hasn39。t moved very much, the energy saving of sleeping is about 110 calories a , that39。s the equivalent of a hot dog , I would say that a hot dog bun is kind of a meager return for such a plicated and demanding behavior as I39。m less convinced by the energy conservation the third idea I39。m quite attracted to, which is brain processing and memory we know is that, if after you39。ve tried to learn a task, and you sleepdeprive individuals, the ability to learn that task is 39。s really hugely sleep and memory consolidation is also very , it39。s not just the laying down of memory and recalling 39。s turned out to be really exciting is that our ability to e up with novel solutions to plex problems is hugely enhanced by a night of fact, it39。s been estimated to give us a threefold at night enhances our what seems to be going on is that, in the brain, those neural connections that are important,