From the Ted Talk by Christine Blume: How daylight could help you sleep
Unscramble the Blue Letters
rnodha Jacobs, Translator
dviad DeRuwe, Reviewer
On a usual Saturday, you wouldn’t find me here. And I mean, of course, I don’t give TEDx tklas every Saturday. But what I mean is you probably wouldn’t find me in a museum. Further, if you were looking for me, you’d probably have to go to the mountains. And that is because I absolutely love hiking. And in addition to just being outside and being in the nature, what I really like is this feeling of physical exhaustion, sort of this satisfaction you can feel in every single muscle. And in the evening when it’s time to go to bed, I absolutely crsiehh this amzniag seenlsieps that flils you from head to toe. Now, you might say, “Well, of course she’s tired. She’s been hiking all day.” Plus, not to fregot about the effects of supposedly fresh air. But there is one fatcor that most likely outweighs the effects of fresh air and perhaps even physical activity, and that is exposure to natural daylight. And today I hope to convince you that we should all appreciate daylight as sort of of a natural soporific. And hopefully by the end of the talk, you will also recognize that we should all pay more attention to our daily lhigt diet. But let’s start with a question, why daylight is so important for our organism, for hatleh and eventually for sleep. Now, throughout your body, in each and every single cell, there is a tiny mlacoleur clock ticking inside it. And to keep these milolnis of clocks in sync, we have one central body clock that is located in the brain in an area which we call the hayhlmotuaps. And like the conductor of an orsrhetca, it concieamutms the time of day to each of these molecular clocks. And this way it is able to regulate bodily processes in sync with the time of day. For example, it causes your body temperature to increase in the morning and to decrease in the eennvig. It choreographs the release of certain homrenos at a proper time, and in the evening when it’s time to go to bed, it will also make you tired and spleey. But given this precise synchronization between internal or biological time and external time or environmental time, it seems clear that the body clock cannot be blind or isolated or shut off from the environment, but rather it needs to receive information about the time of day from the environment for it to synchronize with sun time. And this is achieved by close connections between the internal biological colck in the brain and our eyes. And now you may know that in the human retina, there are different types of receptors, photoreceptors, so receptors that sense light. And classically, we distinguish two types: the rods and the cones. Now, the rods, they only contribute to a visual impression under very dim lighting conditions. And here in the bkcngrauod, you now see a picture that might more or less be brought about by only the involvement of the rods. What you can see is that it’s only seahds of gray, it’s slightly blurred, and around the point of fixation, which is indicated by the gray dot here, you have a little scotoma, so an area where you can’t really see anything. Now, who rizneeogcs what that is? Yeah? Yeah, excellent. But it's going to be way easier, and the majority of you will recognize what it is when I now stwich to the next slide, which is brought about by the involvement of the cones. Of course, it’s the town hall of Basel, but now you can appreciate the colors, fine details, and if this was ataenimd, you’d even see fine details in motion. But this is not the whole story. Because only fairly recently, only in the early 2000s, another type of cell has been discovered, and we call them rantiel ganglion cells. Now, you might ask yourselves, well, What picture’s she going to show next? But I have to dosanpipit you. I actually can’t show another picture because from all we know, these clles do not couibrttne to a viausl iemssrpoin. But they're exclusively designed to sense short weagtevnlh proportions in daylight. Sometimes we also call this blue light. So they’re degensid to extract important information about the time of day from the emonrvneint and pass this on to the internal bciaioglol clock in the brain. And I guess you’ve all experienced how well this biological timing system, this connection between our biological clock and the external world or our eyes wrkos, when we, for example, travel across time zones, because with a speed of approximately one hour per day, you can fairly easily adapt to the new time zone. Now, how much light do we actually need? How much light is enough for the positive effects on, for instance, sleep to occur? And I have to admit, this is not so easy to answer. But I think what we have to keep in mind is that the biological timing system has evolved under the open sky and not in offices or museums. So it is also optimally tuned to the conditions we find outside. Office light or light in romos is in no way comparable to what we find outside. And therefore, from a scientific perspective, I can only rnecmemod you to spend as much time as you can under the open sky, but try to make it at least 30 minutes per day. Now, let’s finally talk about sleep. And I’ve repeatedly alluded to the fact that daylight is beneficial and important for sleep. And in this context, I’d like to share a little story: So last year I had to go to hospital for surgery. And generally the hoasptil environment is a very challenging one for sleep because you spend way too much time in bed not moving much, you might be in pain, now and then someone comes in to cehck on you even during the nhgit, and if you’re as lucky as I was, you have a snoring roommate, (Laughter) and because you, of course, don’t get a lot of daylight. And that's why many people, while they're in hospital, ask for selep medication. But as I consider myself to be a generally good sleeper, and also because I know how these drugs work, I didn’t want this. But I knew there was something I could do to help my body sleep as well as possible, even in this situation, and that was to maximize exposure to daylight. Because as a sleep scientist, of course I know about the rsaecerh findings. I know that the more daylight that you get, the more teird you will be in the evening, the easier it will be for you to fall asleep and better the experienced sleep quality. And in addition, daylight exposure has also been shwon to increase ppooornrits of deep sleep, which again has been linked to pscoeress of tsisue riepar, something not to be uireesdatmetnd after surgery. And beyond the effects on sleep, we know that patients in bgiehtrr rooms experience less pain and less stress. And also the effects of daylight on mood are well-established. So I thought it might be time for me to put into ptriccae what I often preach. And I have to confess that usually I’m much better at giving advice than following it myself. But here’s what I did. So first, when it became free, I asked the nurses to move my bed to the window place because that does not only give you power of a fresh air sluppy, which is highly recommended in the hospital, but it also maximizes daylight exposure even though you're inside. Second, as soon as I could leave my bed again, I went to the park for short walks, and last, every meal I had, I tried to take on the little balcony. Did it work? Well, it’s a bit difficult to say because it, of course, was the single case study. But from patients suffering from insomnia, so one of the most common sleep disorders, we know that light therapy is beneficial. And therefore, I would like to encourage all of you, and perhaps especially those who might belong to the 25 perecnt srifefung from sleep pmbeolrs to start your own slinge case study. Thank you. (aulpsape)
Open Cloze
______ Jacobs, Translator
_____ DeRuwe, Reviewer
On a usual Saturday, you wouldn’t find me here. And I mean, of course, I don’t give TEDx _____ every Saturday. But what I mean is you probably wouldn’t find me in a museum. Further, if you were looking for me, you’d probably have to go to the mountains. And that is because I absolutely love hiking. And in addition to just being outside and being in the nature, what I really like is this feeling of physical exhaustion, sort of this satisfaction you can feel in every single muscle. And in the evening when it’s time to go to bed, I absolutely _______ this _________________ that _____ you from head to toe. Now, you might say, “Well, of course she’s tired. She’s been hiking all day.” Plus, not to ______ about the effects of supposedly fresh air. But there is one ______ that most likely outweighs the effects of fresh air and perhaps even physical activity, and that is exposure to natural daylight. And today I hope to convince you that we should all appreciate daylight as sort of of a natural soporific. And hopefully by the end of the talk, you will also recognize that we should all pay more attention to our daily _____ diet. But let’s start with a question, why daylight is so important for our organism, for ______ and eventually for sleep. Now, throughout your body, in each and every single cell, there is a tiny _________ clock ticking inside it. And to keep these ________ of clocks in sync, we have one central body clock that is located in the brain in an area which we call the ____________. And like the conductor of an _________, it ____________ the time of day to each of these molecular clocks. And this way it is able to regulate bodily processes in sync with the time of day. For example, it causes your body temperature to increase in the morning and to decrease in the _______. It choreographs the release of certain ________ at a proper time, and in the evening when it’s time to go to bed, it will also make you tired and ______. But given this precise synchronization between internal or biological time and external time or environmental time, it seems clear that the body clock cannot be blind or isolated or shut off from the environment, but rather it needs to receive information about the time of day from the environment for it to synchronize with sun time. And this is achieved by close connections between the internal biological _____ in the brain and our eyes. And now you may know that in the human retina, there are different types of receptors, photoreceptors, so receptors that sense light. And classically, we distinguish two types: the rods and the cones. Now, the rods, they only contribute to a visual impression under very dim lighting conditions. And here in the __________, you now see a picture that might more or less be brought about by only the involvement of the rods. What you can see is that it’s only ______ of gray, it’s slightly blurred, and around the point of fixation, which is indicated by the gray dot here, you have a little scotoma, so an area where you can’t really see anything. Now, who __________ what that is? Yeah? Yeah, excellent. But it's going to be way easier, and the majority of you will recognize what it is when I now ______ to the next slide, which is brought about by the involvement of the cones. Of course, it’s the town hall of Basel, but now you can appreciate the colors, fine details, and if this was ________, you’d even see fine details in motion. But this is not the whole story. Because only fairly recently, only in the early 2000s, another type of cell has been discovered, and we call them _______ ganglion cells. Now, you might ask yourselves, well, What picture’s she going to show next? But I have to __________ you. I actually can’t show another picture because from all we know, these _____ do not __________ to a ________________. But they're exclusively designed to sense short __________ proportions in daylight. Sometimes we also call this blue light. So they’re ________ to extract important information about the time of day from the ___________ and pass this on to the internal __________ clock in the brain. And I guess you’ve all experienced how well this biological timing system, this connection between our biological clock and the external world or our eyes _____, when we, for example, travel across time zones, because with a speed of approximately one hour per day, you can fairly easily adapt to the new time zone. Now, how much light do we actually need? How much light is enough for the positive effects on, for instance, sleep to occur? And I have to admit, this is not so easy to answer. But I think what we have to keep in mind is that the biological timing system has evolved under the open sky and not in offices or museums. So it is also optimally tuned to the conditions we find outside. Office light or light in _____ is in no way comparable to what we find outside. And therefore, from a scientific perspective, I can only _________ you to spend as much time as you can under the open sky, but try to make it at least 30 minutes per day. Now, let’s finally talk about sleep. And I’ve repeatedly alluded to the fact that daylight is beneficial and important for sleep. And in this context, I’d like to share a little story: So last year I had to go to hospital for surgery. And generally the ________ environment is a very challenging one for sleep because you spend way too much time in bed not moving much, you might be in pain, now and then someone comes in to _____ on you even during the _____, and if you’re as lucky as I was, you have a snoring roommate, (Laughter) and because you, of course, don’t get a lot of daylight. And that's why many people, while they're in hospital, ask for _____ medication. But as I consider myself to be a generally good sleeper, and also because I know how these drugs work, I didn’t want this. But I knew there was something I could do to help my body sleep as well as possible, even in this situation, and that was to maximize exposure to daylight. Because as a sleep scientist, of course I know about the ________ findings. I know that the more daylight that you get, the more _____ you will be in the evening, the easier it will be for you to fall asleep and better the experienced sleep quality. And in addition, daylight exposure has also been _____ to increase ___________ of deep sleep, which again has been linked to _________ of ____________, something not to be ______________ after surgery. And beyond the effects on sleep, we know that patients in ________ rooms experience less pain and less stress. And also the effects of daylight on mood are well-established. So I thought it might be time for me to put into ________ what I often preach. And I have to confess that usually I’m much better at giving advice than following it myself. But here’s what I did. So first, when it became free, I asked the nurses to move my bed to the window place because that does not only give you power of a fresh air ______, which is highly recommended in the hospital, but it also maximizes daylight exposure even though you're inside. Second, as soon as I could leave my bed again, I went to the park for short walks, and last, every meal I had, I tried to take on the little balcony. Did it work? Well, it’s a bit difficult to say because it, of course, was the single case study. But from patients suffering from insomnia, so one of the most common sleep disorders, we know that light therapy is beneficial. And therefore, I would like to encourage all of you, and perhaps especially those who might belong to the 25 ________________ from sleep ________ to start your own ______ case study. Thank you. (________)
Solution
molecular
tired
percent
suffering
shown
evening
talks
hospital
tissue
orchestra
visual
research
sleepy
proportions
recognizes
sleep
rhonda
practice
switch
health
processes
check
impression
recommend
single
hormones
communicates
works
sleepiness
cells
shades
problems
light
forget
fills
wavelength
cherish
night
rooms
designed
contribute
david
environment
repair
biological
factor
hypothalamus
retinal
disappoint
amazing
brighter
millions
supply
clock
applause
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animated
Original Text
Rhonda Jacobs, Translator
David DeRuwe, Reviewer
On a usual Saturday, you wouldn’t find me here. And I mean, of course, I don’t give TEDx Talks every Saturday. But what I mean is you probably wouldn’t find me in a museum. Further, if you were looking for me, you’d probably have to go to the mountains. And that is because I absolutely love hiking. And in addition to just being outside and being in the nature, what I really like is this feeling of physical exhaustion, sort of this satisfaction you can feel in every single muscle. And in the evening when it’s time to go to bed, I absolutely cherish this amazing sleepiness that fills you from head to toe. Now, you might say, “Well, of course she’s tired. She’s been hiking all day.” Plus, not to forget about the effects of supposedly fresh air. But there is one factor that most likely outweighs the effects of fresh air and perhaps even physical activity, and that is exposure to natural daylight. And today I hope to convince you that we should all appreciate daylight as sort of of a natural soporific. And hopefully by the end of the talk, you will also recognize that we should all pay more attention to our daily light diet. But let’s start with a question, why daylight is so important for our organism, for health and eventually for sleep. Now, throughout your body, in each and every single cell, there is a tiny molecular clock ticking inside it. And to keep these millions of clocks in sync, we have one central body clock that is located in the brain in an area which we call the hypothalamus. And like the conductor of an orchestra, it communicates the time of day to each of these molecular clocks. And this way it is able to regulate bodily processes in sync with the time of day. For example, it causes your body temperature to increase in the morning and to decrease in the evening. It choreographs the release of certain hormones at a proper time, and in the evening when it’s time to go to bed, it will also make you tired and sleepy. But given this precise synchronization between internal or biological time and external time or environmental time, it seems clear that the body clock cannot be blind or isolated or shut off from the environment, but rather it needs to receive information about the time of day from the environment for it to synchronize with sun time. And this is achieved by close connections between the internal biological clock in the brain and our eyes. And now you may know that in the human retina, there are different types of receptors, photoreceptors, so receptors that sense light. And classically, we distinguish two types: the rods and the cones. Now, the rods, they only contribute to a visual impression under very dim lighting conditions. And here in the background, you now see a picture that might more or less be brought about by only the involvement of the rods. What you can see is that it’s only shades of gray, it’s slightly blurred, and around the point of fixation, which is indicated by the gray dot here, you have a little scotoma, so an area where you can’t really see anything. Now, who recognizes what that is? Yeah? Yeah, excellent. But it's going to be way easier, and the majority of you will recognize what it is when I now switch to the next slide, which is brought about by the involvement of the cones. Of course, it’s the town hall of Basel, but now you can appreciate the colors, fine details, and if this was animated, you’d even see fine details in motion. But this is not the whole story. Because only fairly recently, only in the early 2000s, another type of cell has been discovered, and we call them retinal ganglion cells. Now, you might ask yourselves, well, What picture’s she going to show next? But I have to disappoint you. I actually can’t show another picture because from all we know, these cells do not contribute to a visual impression. But they're exclusively designed to sense short wavelength proportions in daylight. Sometimes we also call this blue light. So they’re designed to extract important information about the time of day from the environment and pass this on to the internal biological clock in the brain. And I guess you’ve all experienced how well this biological timing system, this connection between our biological clock and the external world or our eyes works, when we, for example, travel across time zones, because with a speed of approximately one hour per day, you can fairly easily adapt to the new time zone. Now, how much light do we actually need? How much light is enough for the positive effects on, for instance, sleep to occur? And I have to admit, this is not so easy to answer. But I think what we have to keep in mind is that the biological timing system has evolved under the open sky and not in offices or museums. So it is also optimally tuned to the conditions we find outside. Office light or light in rooms is in no way comparable to what we find outside. And therefore, from a scientific perspective, I can only recommend you to spend as much time as you can under the open sky, but try to make it at least 30 minutes per day. Now, let’s finally talk about sleep. And I’ve repeatedly alluded to the fact that daylight is beneficial and important for sleep. And in this context, I’d like to share a little story: So last year I had to go to hospital for surgery. And generally the hospital environment is a very challenging one for sleep because you spend way too much time in bed not moving much, you might be in pain, now and then someone comes in to check on you even during the night, and if you’re as lucky as I was, you have a snoring roommate, (Laughter) and because you, of course, don’t get a lot of daylight. And that's why many people, while they're in hospital, ask for sleep medication. But as I consider myself to be a generally good sleeper, and also because I know how these drugs work, I didn’t want this. But I knew there was something I could do to help my body sleep as well as possible, even in this situation, and that was to maximize exposure to daylight. Because as a sleep scientist, of course I know about the research findings. I know that the more daylight that you get, the more tired you will be in the evening, the easier it will be for you to fall asleep and better the experienced sleep quality. And in addition, daylight exposure has also been shown to increase proportions of deep sleep, which again has been linked to processes of tissue repair, something not to be underestimated after surgery. And beyond the effects on sleep, we know that patients in brighter rooms experience less pain and less stress. And also the effects of daylight on mood are well-established. So I thought it might be time for me to put into practice what I often preach. And I have to confess that usually I’m much better at giving advice than following it myself. But here’s what I did. So first, when it became free, I asked the nurses to move my bed to the window place because that does not only give you power of a fresh air supply, which is highly recommended in the hospital, but it also maximizes daylight exposure even though you're inside. Second, as soon as I could leave my bed again, I went to the park for short walks, and last, every meal I had, I tried to take on the little balcony. Did it work? Well, it’s a bit difficult to say because it, of course, was the single case study. But from patients suffering from insomnia, so one of the most common sleep disorders, we know that light therapy is beneficial. And therefore, I would like to encourage all of you, and perhaps especially those who might belong to the 25 percent suffering from sleep problems to start your own single case study. Thank you. (Applause)