Science Vs - Lucid Dreaming: The Bonkers World Inside Our Minds

Episode Date: November 14, 2024

Some people can control their dreams. While they're fast asleep: they fly, create new worlds, live other lives. But Wendy isn't one of them. So in today's episode, Wendy and the Science Vs team find a... scientifically approved method to try to lucid dream. We test it out — and bizarre things start happening. We also explore how scientists are trying to harness the strange powers of lucid dreaming to help people, as well as to crack huge scientific mysteries, like: What is consciousness? And what exactly goes on in all of our heads when we're asleep? To do all this and more, we talk to psychologists Dr. Denholm Adventure-Heart and Dr. Brigitte Holzinger, as well as cognitive neuroscientist Dr. Başak Türker. Find our transcript here: https://bit.ly/ScienceVsLucidDreaming In this episode, we cover: (00:00) Let's Fly! (04:24) Does Reality Testing Work? (11:30) Does the MILD Technique work? (14:10) Wendy and the Team Try to Lucid Dream (17:37) Can Drugs or Masks Help You Lucid Dream? (19:28) Inside the Mind of a Lucid Dreamer (26:24) Strange Windows of Consciousness  (27:58) The Lucid Dreaming Brain (34:53) Can We Use Lucid Dreaming to Help Us? (38:32) Did the Science Vs team have a Lucid Dream? This episode was produced by Wendy Zukerman, with help from Rose Rimler, Michelle Dang, Joel Werner, Meryl Horn and Ekedi Fauster-Keeys. We’re edited by Blythe Terrell. Fact checking by Erica Akiko Howard. Mix and sound design by Sam Bair. Music written by Bobby Lord, Bumi Hidaka, So Wiley, Peter Leonard and Emma Munger. Thanks to all the researchers we spoke to including Dr Karen Konkoly, Dr Benjamin Baird, and Professor Ken Paller. Also thanks to the Zukerman Family and Joseph Lavelle Wilson. Science Vs is a Spotify Studios Original. Listen for free on Spotify or wherever you get your podcasts. Follow us and tap the bell for episode notifications.  Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript
Discussion (0)
Starting point is 00:00:00 Whoa, this is incredible. And I like flew around in like big loop-de-loops. I'm up high, I'm looking down at the trees, I'm feeling the wind in my hair and just totally going for it. I felt like I'd unlocked something like super magical. Then I really did have the sensation. I was like, this feels to me like what it would feel like
Starting point is 00:00:24 to be flying have the sensation. I was like, this feels to me like what it would feel like to be flying in the sky. Hi, I'm Wendy Zuckerman and you're listening to Science Versus. Today on the show, we're pitting facts against flying as we swoop into the world of lucid dreaming. There are people that have a superpower where they know that they're dreaming and sometimes can even control what happens next. And in their dreams, people all over the world are saying,
Starting point is 00:00:54 Okay, great, let's fly. And that's what I did. I was just flying up and down the staircase. Whoo-hoo! I found myself flying through a beautiful landscape, I guess similar to New Zealand. And the insanely almost magical thing about lucid dreaming is that people who do this will tell you that it feels real. It's not like closing your eyes and imagining that you're flying or doing whatever.
Starting point is 00:01:26 You're really there. It feels so real. You're like, how is this possible? It feels so real. And like you can hear, you can smell, you can even taste. You know, I've had lucid dreams where I've just gone to a banquet and just tried all the different foods on the table. I could also have superpowers and go on epic missions into outer space.
Starting point is 00:01:43 And it was just this like playground in your own mind. A playground to be whoever you want to be. And for some folks, this isn't just a bit of fun. They're also trying to use lucid dreaming to improve their mental health, overcome fears, and to understand themselves better. That's how my friend Archer used lucid dreaming. He's the guy going, whoo-hoo, flying down the staircase.
Starting point is 00:02:12 Archer is a trans man. He wasn't born with a penis. And for years now, he'd wished that he had one. So in a lucid dream, I decided to summon the penis. And then the penis appeared. I made one in a dream. How did it feel?
Starting point is 00:02:34 A bit underwhelming. So I tried it out in a dream. I used it in a sexy way. And it was like, this is fine, but it wasn't amazing. You know, not this great thing that I needed to complete my body and then I would be happy, healthy guy out in the world. How big was this for you? How big was this?
Starting point is 00:03:01 How big was the moment? Ard. That was one part of a healing process for me. And now I'm in a place where I can't actually, now I don't really want a penis anymore. That's just for me, obviously, it's really important for some people. Have you since practiced loose dreaming for any other kind of sexy dreams? Yeah. I mean, I'm only human. This is a magical power you have.
Starting point is 00:03:33 So today on the show, we are going to teach you how to lucid dream. That's right, scientists have studied the best way to get this superpower. And we will reveal their peer-reviewed secrets. We'll also explore how researchers are trying to harness the strange powers of lucid dreaming to help people through trauma and depression and to crack these huge scientific mysteries like what is consciousness and what exactly goes on in all of our heads when we're asleep. When it comes to lucid dreaming, there's a lot of... Let's fly!
Starting point is 00:04:09 And then there's science. Science vs. Lucid dreaming is coming up just after the break. As Canadian dairy farmers, we follow ProAction, dairy farmers of Canada's national quality assurance program with six modules. Modules like milk quality, that stands for high standards of milk production. Or food safety, producing milk that meets 42 requirements. And animal care, that means caring for every cow. ProAction sets standards of excellence. That's what's behind the Blue Cow logo. Dairy Farmers of Canada.
Starting point is 00:04:53 Y'all afraid of ghosts? How about ghost peppers? It's the moment you've been waiting for. The ghost pepper sandwich is back at Popeyes. A buttermilk battered chicken breast served on a brioche bun with barrel cured pickles. And here's the best part. It's topped with a sauce made from ghost peppers and ancho chilies. If that doesn't send a chill of anticipation down your spine, nothing will. Get your ghost pepper sandwich today at Popeyes before it ghosts you for another
Starting point is 00:05:20 year. Welcome back. Today we are flying into the dream world. Or at least we're trying to. And if we want to channel lucid dreaming to improve our lives, the first step is to learn how to do this. Because for many of us, it doesn't come easy. I mean, studies find that around half of us will have had at least one lucid dream in our lifetime, but not all lucid dreams are created equal. For me, the best I've gotten is that I'll realise I'm dreaming for a moment, and then I either wake up or go back to regular sleep. And my lacklustre, lucid experience is pretty common. One study reckoned that only around a third of people
Starting point is 00:06:13 who lucid dream can manipulate what they're doing in their dreams. So how can we up our game and learn how to become gods in the dream world? For this, we need Dr Denim Adventurehart, a psychologist in Brisbane, Australia. Denim lives with sciatica, which can cause this nasty pain throughout his body. And several years ago, things got really bad. When it was at its worst, it was so limiting that it was very difficult and painful to
Starting point is 00:06:45 even take the bins out at night. There were some days when he could barely get out of bed. Well, unless he was lucid dreaming. Every now and then, Denim would find himself in a lucid dream. And there, he could escape his illness. I could do anything. You know, I could, not only could I get up and run and, you know, explore and go to new worlds
Starting point is 00:07:11 and whatever my imagination could conjure, it actually really helped my quality of life because it gave me something to be excited about. The problem was that Denim couldn't play in this playground very often. He'd go to sleep and night after night, no running, no new worlds. And he'd wake up still stuck in bed in pain.
Starting point is 00:07:32 So Denim decides that he's gonna train himself to get better at lucid dreaming. And he gets really into this thing called reality testing or reality checks. And these are huge in the lucid dreaming world. I mean, just ask Christopher Nolan about it. It was an inception. So to understand how this could work,
Starting point is 00:07:53 it's helpful to know that often people will spontaneously have a lucid dream because they'll be stuck in the middle of a dream and something really weird will happen that makes them think, what, this has to be a dream. And voila, they're lucid. And so reality testing is all about trying to hack that process. So here's what Denim would do.
Starting point is 00:08:17 While he was awake, he'd close his mouth tightly and then try to inhale through his mouth. Wait, I wanna to try it. So you've got your mouth closed. Yeah, and then try to inhale with your lips closed. And it doesn't work, right? If you think you're doing this, you're actually breathing through your nose. So the fact that you can't do it tells you that this is not a dream.
Starting point is 00:08:42 You are awake and listening to this podcast." But Denim had read that in dreams you can breathe through a closed mouth and that was true for him. It almost always will feel different. You can feel this sense of closed lips but at the same time you can feel the air just entering your lungs and breathing in through your mouth at the same time. Really? Yeah, it's really bizarre. Another super popular reality test is trying to poke your finger straight through your
Starting point is 00:09:15 palm. Obviously, while you're awake, it doesn't work. But in the dream world, people say that your finger does go through your palm. And so the idea here is that you will do these reality checks tons of times throughout the day. And because most dreams are reflections of the stuff that we're doing throughout our day, you hope that then in a dream, you will also do a reality test. And when you feel that air moving through your closed mouth,
Starting point is 00:09:46 or you see your finger slip through your palm, then you'll realise this is a dream and you'll be lucid. And so it's almost like trying to prime yourself to accidentally discover that you're dreaming. You realise, ah, I'm in a dream. That's the moment of lucidity. I'm in a dream. That's the moment of lucidity. So, Denim is sick at home and he's doing these reality tests a lot. Oh, geez. I went pretty overboard with it. I probably was doing it hundreds of times a day at some of those periods.
Starting point is 00:10:17 Oh, wow. But it was strange because he wasn't having that many lucid dreams. And so was it frustrating? Super frustrating. I know how amazing these experiences are and I know that I can access them, but they're just not coming as often as I would like. So it was incredibly frustrating. So Denim starts thinking, what's going on here? Is it just me?
Starting point is 00:10:41 And being a scientist, he decides to study it. me and being a scientist, he decides to study it. He sets up an experiment recruiting more than 350 people from all around the world, making this the largest study I could find on inducing lucid dreams. To get a baseline for seven days, everyone would record how many dreams they were having and how many of those were lucid. Then Denim puts everyone into different groups. Some are told to practice reality testing. They do it for seven days and guess what?
Starting point is 00:11:12 Reality testing didn't seem to really make that much of a difference. That's very interesting because even then, I have spoken to quite a lot of lucid dreaming academics and asked them all, how should I do this? And they've all said, you should try reality testing. Like it's so embedded in the zeitgeist around lucid dreaming and yet your study found it actually didn't work.
Starting point is 00:11:36 Oh, it was very surprising because like you said, this is like the common wisdom is do reality testing like then the more the better. And it's not even like doing it 100 times is better than 10. It just didn't actually seem to matter that much. And so it kind of goes against the grain of what most people will tell you. Other smaller studies have found this too.
Starting point is 00:12:00 On average, we can't see a statistical link between reality testing and having a lucid dream. And one reason for this could be because reality tests can fail. In that even in your dream, you still can't put your finger through your palm, which makes perfect sense. We know that dreams are super subjective, unlike what you might read on a lucid dreaming reddit post. There's no physics or biology in the dream world that means your hands are made of putty. But in Denim's study, he was testing other lucid dreaming techniques as well. And he did find something that worked.
Starting point is 00:12:40 It's called mnemonic induction of lucid dreams and in denim study, on average, about one in six times that people tried this method, they had a lucid dream. One in six. Wow. That's a pretty good rate, right? It's a very good rate. Here's what you've got to do. You set your alarm clock.
Starting point is 00:13:01 Yeah. So it goes off at about five hours after you've gone to sleep. That's rubbish. Five hours. Yeah. Look, it's a bit of a necessary evil, unfortunately. You're waking up at around four or five a.m. because you're trying to catch yourself in REM sleep, which is where most of us have our lucid dreams.
Starting point is 00:13:23 Okay. So once you wake up... Imagine yourself being back in a dream, ideally the one you were just in. Imagine yourself walking around, noticing something like a pink elephant or something strange. So you're trying to remember the dream that you were just in.
Starting point is 00:13:42 You're visualising yourself being back there. And what you're doing is trying to notice something unusual that might make you realize, hey, I'm dreaming. And as you're awake, repeat this mantra. Next time I'm dreaming, I want to remember that I'm dreaming. You keep doing it until you really are feeling into that intention that next time I'm dreaming I want to remember that I'm dreaming. Like that that strength of intentions got to be strong. Once that's set then you just go back to sleep as normal. In Denim study people were roughly three times more
Starting point is 00:14:16 likely to have a lucid dream after doing this compared to that week where they weren't doing anything special. And other studies have found that this technique works as well. As a little tip, if you can go back to sleep quickly, within five minutes after doing all the mantra stuff, you up your chance of having a lucid dream even more. Plus, the people in Denim's study who had never really tried lucid dreaming before had a similar success rate to those who were more experienced.
Starting point is 00:14:46 So it shows that even beginners can learn this quite quickly. Do you think that everyone can have a lucid dream? Like if they really put their mind to it, do you think we're all capable of this? I don't know for sure, but if I had to hazard a guess, I would say there probably are some people that could spend a lot of time on this and still not be able to lose a dream. But I would say for most people, it's a learnable skill. A learnable skill, you say. Next time I'm dreaming, I will remember I'm dreaming.
Starting point is 00:15:18 Next time I'm dreaming, I will remember I'm dreaming. Next time I'm dreaming, I will remember I'm dreaming. Next time I'm dreaming, I will remember I'm dreaming. I'm dreaming. In Denham's research, people who were far from lucid dreaming ninjas could learn this in just one week. So my editor, Blythe Terrell, Senior Producer Rose Ribler, and I, we wanted to fly. Actually, for Rose, she had a very particular dream that she wanted to conjure up. You know what, sometimes to relax, I imagine that I've become very, very small and I'm like the height of a blade of grass and I get to walk around and sit on a mushroom like
Starting point is 00:15:57 a toadstool and use a dandelion as an umbrella and that kind of thing. So it'd be kind of fun if I could do that in my dream. And then it would be really vivid and it would be more real than just my awake imagination. Oh, wow, that's so cute, Rose. Yes. So I explained how we were going to do this, that we'd wake up five hours after going to sleep.
Starting point is 00:16:20 We would try to remember the dream we were just in. We'd think about all the weird stuff that obviously makes it a dream. And then we'd say the mantra. It should take five to ten minutes. Five to ten... at four in the morning or whatever? Yeah. Man, you guys have your work cut out for you.
Starting point is 00:16:34 I'm glad I can already do this. So you are just here to brag. Confirmed. Yeah. Astute ears listening to this podcast might notice that Blythe was one of the voices you heard at the start of the show. She was flying in a lucid dream doing those big loopty loops. But Blythe can't do this very often. So she wants to see if she can supercharge her superpower.
Starting point is 00:16:56 And Rose and I are going to find out if we can control things in our dreams for the very first time. I'm excited. I'm pumped. How are you feeling, Wendy? I am not optimistic at all, in fact. For me, for me. But I wish I had, but I'm really trying
Starting point is 00:17:15 to have a positive attitude. All right, meet back in a week. Give ourselves a week. Okay. Okay. Okay, this is day one of the Lusa Dreamy experiment. Okay, I just woke up. I don't remember what my dream was, okay. But, so I'll try to remember a different dream.
Starting point is 00:17:45 I like can't remember a different dream. I like can't remember any dreams. I actually woke up during a dream where I was covered in ticks. Like making these huge abscesses on my legs. That's really gross. Okay, next time I dream, I will remember I'm dreaming. Did try, did the mantra, but no outcome.
Starting point is 00:18:09 Well, spoiler alert, it didn't work. I did not lose the dream. Day whatever, it didn't work, it didn't work. Another flop today. Yeah, I don't know, it sucks, it's not for me. Yeah, I don't know. It sucks. It's not for me. So, it's not going great, but I'm not giving up. I'm too curious. I want to know what it feels like to walk around inside my own mind.
Starting point is 00:18:38 And soon I start looking around online for things to help me. There's this drug that people talk about called galantamine. It sounds like something out of Lord of the Rings, but we think it keeps you in REM for longer than normal, and researchers actually found that it can up your chance of having a lucid dream. But it's only really been studied by getting people to take the drug when they wake up at stupid o'clock anyway
Starting point is 00:19:04 while they're doing the technique that we're already doing. Plus, the drug has some side effects, so forget it. There are also masks that you can get for sometimes thousands of dollars, claiming that their lights or sounds can help you, quote, unlock the world of lucidity where everything is possible, end quote. And the idea behind some of these masks is actually really interesting because there is research that shows that if you,
Starting point is 00:19:35 for example, play someone a particular sound, like three beeps, while they're awake and doing a set of instructions about becoming lucid when they're dreaming. And then you play that same sound when they're asleep. It could cue you to become lucid in that moment. But when it comes to these masks that you can buy online, very few have actually been tested or shown to work.
Starting point is 00:20:04 After the break, we go deep inside the brain to find out how people can control things in their dreams. As Canadian dairy farmers, we follow ProAction, Dairy Farmers of Canada's National Quality Assurance Program with six modules. Modules like Milk Quality, that stands for High Standards of Milk Production. Or Food Safety, producing milk that meets 42 requirements. And Animal Care, that means caring for every cow. ProAction sets standards of excellence. That's what's behind the Blue Cow logo.
Starting point is 00:20:52 Dairy Farmers of Canada. I am so dreading groceries this week. Why? You can skip it. Oh, what? Just like that? Just like that. How about dinner with my third cousin?
Starting point is 00:21:03 Skip it. Prince Fluffy's favorite treats? Skippable. Midnight snacks? Skip. My neighbor's nightly saxophone practices? Er, nope, you're on your own there. Coulda skipped it?
Starting point is 00:21:15 Shoulda skipped it. Skip to the good part and get groceries, meals, and more delivered right to your door on skip. Think about something you're good at. Now think about how you got there. Chances are, you had someone to help you get started. If you're thinking about starting to invest, Questrade's award-winning support team is here to help you learn how to become a better investor.
Starting point is 00:21:40 From placing your first trade to setting up customized stock alerts, we're always by your side. Just a few of the reasons why we are Canada's number one rated online broker by MoneySense. Get started today at Questrade.com. Bumble knows it's hard to start conversations. Hey. No, too basic. Hi there. Still no. What about, hello handsome? Ugh, who knew you could give yourself the ick?
Starting point is 00:22:08 That's why Bumble is changing how you start conversations. You can now make the first move or not. With opening moves, you simply choose a question to be automatically sent to your matches. Then sit back and let your matches start the chat. Download Bumble and try it for yourself. Welcome back today on the show, Lucid Dreaming. And now let's find out what is happening in our brains as we go on these grand adventures and have a lucid dream. So if you want to know what's going on in someone's brain as they're lucid,
Starting point is 00:22:48 you first have to know the moment that that person who is fast asleep has become lucid. But they're asleep, right? They can't tell you. Well, decades ago, researchers worked out a kind of bonkers way to do this. And I talked about it with Dr. Basak Turka, a cognitive neuroscientist at Parasite University. So she told me that lucid dreamers will come into a lab... Tell them to sleep, and if they are having a dream that they're aware of, a lucid dream, they can send a signal. And the bat signal that researchers chose
Starting point is 00:23:31 is that the lucid dreamers would move their eyes all the way to the left and then all the way to the right. And they do that a couple of times. And all the while, they'd have sensors on their face and head to detect eye muscle movements and to make sure that they were sleeping. And with this idea, which is for me, it's incredible, they actually managed to show that sleeping people were actually sending the eye signals to tell, I'm having a lucid
Starting point is 00:23:57 dream. With this bat signal, scientists can now probe what's going on in someone's brain while they're lucid. Which brings us to the story of Bashak and a lucid dreamer who we'll call A.C. A.C. has narcolepsy, which is a sleep disorder where you fall asleep randomly throughout the day and for reasons we don't fully understand, it's linked with lucid dreaming. So this illness comes with a superpower. You also become a great lucid dreamer.
Starting point is 00:24:29 So he was having a lot of lucid dreams, and he would tell us about his adventures in the night. I basically spend like one or two hours of my day lucid dreaming. This is AC. So for me, it's like having a second life. And I don't usually talk about it it because nobody wants to hear about it. Because no one wants to hear about your dream. AC had been involved in some lucid dreaming experiments where he had to do the bat signal to indicate he was lucid.
Starting point is 00:25:00 But he wanted to boldly take lucid dreaming science, where no one had gone before. And Bichac and her colleague were intrigued. So we thought, okay, that's great. So we can maybe do a little experiment on you. It was in the afternoon. There was a room free and there was like, okay, let's try something. The plan was simple. Bichac and her colleague would ask him yes, no questions while he was fast asleep,
Starting point is 00:25:29 but lucid, and he would try to answer them, smiling three times for yes, and frowning three times for no. And this is something that for years science had thought was kind of impossible. I mean, sometimes you might ask a partner in the middle of the night, hey, did you take the trash out? And they kind of respond. So they answer and they mumble usually like, and sometimes it makes sense and sometimes it doesn't.
Starting point is 00:25:57 We call them micro arousal, so your brain kind of wakes up for a second. So if you look at their brain activity, you can see that they're not asleep in that moment. You might have woken them up. We also know that in some of the earlier stages of sleep, you are aware of the awake world, but once you are conked out, dead to the world in deep sleep or REM, you're not supposed to answer questions. So, Bashak and her colleague put sensors all around AC's head and face to measure whether he's asleep and what his mouth muscles are doing.
Starting point is 00:26:36 Bashak tells AC, nighty night, or whatever scientists say to each other, and AC lays on the lab bed and goes to sleep. But I think we were still a bit naive about it. We're like, yeah, let's try, but we didn't really. Like, we were like, it might work, but it might not work. AC is in deep sleep, and they could clearly see it on the sensors. But in his dream, he was in an epic battle. I was fighting goblins with a swad.
Starting point is 00:27:14 He becomes lucid and signals to Bashak using the bat signal. And then we ask them for example some questions. And here's where it gets weird. AC.C. remembers hearing those questions from within the dream. It's like a voice from above. You know, when you're in the station and there's an announcement, but you don't know where it comes from, just like that. Bashak asks... Do you like chocolate?
Starting point is 00:27:41 Do you like chocolate? And so I smiled three times. Yeah, I like chocolate. And when Bichak sees the smile, she's not sure it's real. Is he really sleeping? And we were checking the brain activity, he is. But he's responding, right? And she's like, yeah, yeah, he's responding.
Starting point is 00:27:56 She asks more questions. Do you watch football? Do you speak Spanish? And actually, I was lucid enough to think about, OK, I can say a couple of words, but does that mean that I'm speaking Spanish? No, that doesn't make sense. I was going to say no.
Starting point is 00:28:14 And you're fighting goblins at the same time. Yeah, that's quite epic. And while Acy is having a fine time, Bishak and her colleague were starting to freak out. We were like, do you see what I'm seeing? And she was like, yes. So it was crazy because we were communicating with someone who was dreaming and we were alone in this room and super excited and you know, like half yelling with excitement and half shocked. alone in this room and super excited and you know like half yelling with excitement and half shocked. I think it was one of the scientifically the best moments of my life I would say when I
Starting point is 00:28:50 saw that. No I felt like we discovered a new element you know it felt so like we were so I think I smiled for a week non-stop I was so happy.. And as Bashak is smiling about this discovery in France, other researchers in the US, Germany and the Netherlands are having similar experiences. In one lab, researchers even asked a lucid dreamer, what's eight minus six? And while he was asleep and lucid, he responded using the bat signal to indicate two. After Bishuk saw this, she studied it in more lucid dreamers, who, by the way, all had narcolepsy. And she switched up the experiment a little bit.
Starting point is 00:29:33 So this time, while they were asleep, they'd hear all of these fake words like ditza, and then real words like pizza. And they had to smile three times for a real word, and frown three times for a real word and frown three times for a fake word. Now sometimes they didn't respond at all, but a bunch of times they did, and they answered correctly.
Starting point is 00:29:54 But then, Bashak noticed something weird. At times, they would answer the question accurately, smile or frown, while they weren't having a lucid dream. So we got a bit curious, confused and excited at the same time. So then she recruits 22 folks who couldn't lucid dream and also didn't have narcolepsy and she repeats the experiment. It's crazy but they were also able to do the task. So they were indeed asleep according to their brain
Starting point is 00:30:29 activity, but they were able to respond. Wait, they could, so we could, so if I went to sleep now and you started asking me what's a word, pizza or dita, chances are I would respond. There are chances. It's not all the time, but it looks like there are some transient windows of opening, let's say, in which participants respond and then they stop responding.
Starting point is 00:30:51 But the thing is, the lucid dreamers were answering the questions a lot more often. Yes. So if you are lucid dreaming, you tend to respond way more. So this tells us that even when people aren't lucid dreaming, there are these small windows where parts of our brain can listen to the outside world around us and can even figure out whether a word is real or made up, which upends what many of us had thought about what was going on while we were sleeping. But there was something particularly special about what was going on in the brain of someone who was having a lucid dream.
Starting point is 00:31:30 And that meant that those windows where they could respond to the awake world, they were open more often. And in Bishak's study, she saw an important clue as to why this might be. When you're lucid, in our study, what we see is that your brain activity is more complex, more rich and more rapid compared to when they were not lucid. But not so rich that they woke up. Exactly, it's like rich but not so rich. Other research is helping us to explain how we can even have a lucid dream in the first
Starting point is 00:32:02 place. We think a brain area called the prefrontal cortex is important. So normally when you're dreaming and not lucid, the activity in this part of the brain winds down, which Bishak says might explain why weird things can happen in your dream, and that's fine. In a dream, you might have your mom that transforms to a cat, and you wouldn't be shocked. You'll be like, oh yeah, my mom's a cat now, it's fine. In a dream, you might have your mom that transforms to a cat, and you wouldn't be shocked.
Starting point is 00:32:26 You'll be like, oh yeah, my mom's a cat now. It's OK. Because probably your frontal cortex is a bit deactivated, so you cannot, you don't get shocked by these. But we think, based on limited evidence, that while people are lucidly dreaming, this critical area of your brain is more awake. Which allows you to detect anomalities in your dream
Starting point is 00:32:49 and be like, oh, this is a dream, because this doesn't make sense. This wouldn't happen in everyday life. And because lucid dreaming is this hybrid state of consciousness, you know, between being asleep and awake, researchers like Bashak now want to use lucid dreaming to help us understand what consciousness is at all, which remains, according to one review, quote,
Starting point is 00:33:16 one of the largest lacunas in scientific knowledge. And to save you the time, I Googled it, and lacuna means unfilled space. And just quickly, some lucid dreams can actually be felt throughout your whole body. Like if you ask lucid dreamers to hold their breath in a dream, you can see that air stops flowing through your nose and your blood oxygen levels drop just slightly. In another study, someone had an orgasm in their lucid dream and researchers could measure more blood flowing to her vagina.
Starting point is 00:33:56 So, how close are we at science versus to having what she's having? A week has gone by, and by now have we unlocked this hybrid state of consciousness. Everyone say yay if you've had a lucid dream. One, two, three. Mmm. Mmm. Mmm. No luck. No luck.
Starting point is 00:34:23 Nope. Blythe, you actually have this superpower. Has this supercharged your superpower? Uh, zero percent supercharged. Like, I feel like it is actively draining my will to live. Oh no, what's going on? If I wake up in the middle of the night, it is very, very hard for me to go back to sleep.
Starting point is 00:34:47 I feel like my brain, once it's awake, it's like, ooh, I'm awake. Would you like to think about 10,000 problems or like four weird things you said yesterday? Maybe five? We could keep going. Inside my head, I am just like, oh, whoa, whoa, whoa, whoa, whoa, whoa, whoa, whoa.
Starting point is 00:35:01 Yeah, no. I was like, I actually do not think this is probably worth it for me. Wendy, how have you, how has it been going for you? Something strange happened. So let me tell you, I woke up and had been in the middle of this dream where me and my, where there was this sort of creepy oval. I'll just jump in and spare you the pain of listening to too many of my dreams. So basically what happened is that I woke up from this dream
Starting point is 00:35:31 where a bunch of bonkers stuff is going on. I was getting attacked by bats. And just as denim study suggested, I tried to think of all of the wacky things that clearly made this a dream. But in that moment, in the middle of the night, I couldn't think of any reason why it was obviously a dream. And then I went back to sleep.
Starting point is 00:35:51 The next night, another dream. This time I'm in a tunnel on the beach about to drown and I've got my laptop. I wake up and well, as I told Blythe and Rose, and the same thing happens. What about this was clearly a dream? And I'm like, well, there could be a tunnel. I could have brought my laptop to the beach.
Starting point is 00:36:14 And the second time it happened, I realized maybe I was sleeping the whole time. What do you mean? Like, you think you're trying to lucid dream as part of your dream? Like in your dream you were having... Yes! What? I think maybe both times I didn't actually wake up. You just dreamt that you woke up.
Starting point is 00:36:35 And you dreamt that you tried to lucid dream? Well, does it still matter? If I was asleep the whole time, this is known as a false awakening. And curiously, academics have actually written about this phenomenon where your dreams try to convince you that they're actually not dreams. AC says for him this happens all the time. It's the people in his lucid dreams who tell him this is not a dream. Like what the f*** is ridiculous?
Starting point is 00:37:06 And I don't understand why the dream tries so hard to convince me that it's reality. And Denim and Bashak told me that when you think about the neuroscience of lucid dreaming, in a weird way, this kind of makes sense. The state of the brain is firing in when you're in a lucid dream. It's like a tightrope walk between normal waking consciousness and normal non-lucid dreaming. But that's a difficult state for the brain to maintain. It almost wants to tend towards either just waking up or falling into non-lucidity.
Starting point is 00:37:42 So maybe it's a way in your brain to get back to this, you know, natural state. But yeah, I don't know. That's very insane that your dream characters would tell you this is real life. I know! Exactly! It's completely insane. Okay, our next question. Can we use lucid dreaming to help us in our lives? To be happier people? Well, in one survey, many folks said that having a lucid dream
Starting point is 00:38:11 helped them when they were feeling depressed or low. One person said that after a lucid dream, they could have this happy and beautiful experience that would stay with them for days. Another said, quote, it can kickstart your day and keep you warm. And a small study found that the day after people had lucid dreams, on average, they felt less stressed.
Starting point is 00:38:34 But be warned, if you're waking yourself up in the middle of the night to try lucid dreaming, we know that messing with your sleep can be bad for your mental health. Just remember blah. Inside my head, I am just like. And curiously, some researchers actually found a link between being depressed and having
Starting point is 00:38:55 more lucid dreams. We're not sure why. And just quickly, the last thing we want to look into is where the lucid dreaming can help people who have horrendous nightmares. Which, if this happens to you regularly, it can be awful, making you anxious, having difficulty sleeping. And so there's been this idea for a while now that if you can have a lucid dream... It's like, of course, yeah, with a lucid dream, if you have a nightmare, you can do things. Change it or transform it.
Starting point is 00:39:29 Brigitte Holtzinger is a psychologist at the Medical University of Vienna, and she has studied this herself. She's recruited people who are having terrible nightmares about being assaulted, run over by a train, hunted by a monster. She'd teach them how to lucid dream. And she told me that it really did help some of her patients. Some woke themselves up, others would turn around and face the monster. There was one person who used to have these really frightening dreams of being chased where they had to escape.
Starting point is 00:40:02 But after learning to lucid dream, they told Gita... Now that I know that I'm dreaming, I would be stupid if I would stop this or change it. It's much better than every James Bond movie I've ever seen. Oh, wow! Now they could have fun with it, now that this true realisation it's just a dream. Yeah, that was all very impressive and wonderful.
Starting point is 00:40:26 But unfortunately, the evidence that lucid dreaming can help loads of people conquer their nightmares, it isn't so impressive and wonderful. We now have several rather small studies, including Gita's, and there's a new one that's been making headlines, that show that after getting people to try lucid dreaming, they do report fewer nightmares. But these studies combine lucid dreaming with intensive therapy. And it's really hard to tease out what's doing the heavy lifting here. Plus, surveys find that even when people become lucid in their nightmares,
Starting point is 00:41:04 they often can't change what's happening. So they'll be stuck in this terrifying dream. And just knowing this is a dream, it's not real, that isn't necessarily that helpful. In fact, in a survey including more than 30 US veterans with PTSD who could lucid dream, only three said that they felt relieved to know that they'd been dreaming. Many just felt anxious about it. So even this superpower has its kryptonite, its limitations.
Starting point is 00:41:36 But despite that, just like Superman, I still wanted to fly. I switched up the lucid dreaming method a little bit just so I could sleep better, but kept trying. And still, the closest I'd gotten is realising that I'm in a dream, but then getting too excited and waking up before I could do anything. I talked to Gita about it, who gave me one final piece of advice. Almost everybody experiences that. You get so exhilarated. Oh my god, this is now happening! And you get up, you wake up.
Starting point is 00:42:13 Exactly, exactly. Yes, I know, of course I had those as well. To me, it is like learning how to skate. You have to get your balance. Eventually, you will be able to keep that balance and ride that wave. Just be patient and persistent. All right. All right.
Starting point is 00:42:37 But it'll happen if you keep doing it. Blythe, Rose, it's the end of the episode. Everyone say yay if you had a lucid dream. One, two, three. Yay! Really? Wow, it worked! You did? I had one!
Starting point is 00:43:06 Oh my god, Wendy! What? I know! I did it! I did it! Oh my god. Do you want to hear the voice message I made straight after? Yeah.
Starting point is 00:43:19 Yeah. Oh my gosh, I just had a lucid dream. I just did it! I just did it! I just did it, I just did it. I was just having a nap and I just went to sleep. And in the dream, I was lying on my bed and my entire ponytail came off. And I was looking at it going, eww.
Starting point is 00:43:44 And I was like, no wait, this is a dream. Ponytails don't just pop off. This is a dream, this is a dream, this is a dream. And then I put the ponytail down on the bed and I just felt it, like how everyone says, you just feel, because things feel so real. And it did, and it did, and it did, and it felt like my hair felt it felt like my hair
Starting point is 00:44:06 it felt like my hair all the little strands all the little the little bits of hair felt like that it felt like that I did it. How did you feel when you woke up? It felt awesome! It felt awesome! I do love that the lopped off ponytail was enough of the like, unreality dream world. You know, like it was the chopped off ponytail was like weird enough. Yeah, not taking your laptop into a cave at the beach.
Starting point is 00:44:37 That was par for the course. But a haircut? That would never happen. That's Science Versus. This episode has 99 citations. So if you want to read more about the sides of lucid dreaming, then you just need to go to our show notes and click on our transcript and there's a link and you'll see all that wonderful science there awaiting you. If you want to tell us about your lucid dreaming experiences, I would love to hear it.
Starting point is 00:45:20 You can find us on Instagram. We're at science underscore BS, and I'm on TikTok at Wendy Zuckerman. This episode has been produced by me, Wendy Zuckerman, with help from Rose Rimler, Michelle Dang, Meryl Horn, Joel Werner, and Akedie Foster-Keys. We're edited by Blythe Terrell. Fact-checking by Erica Akiko Howard, mix and sound design by Sam Bear, music written by Bobby Lord, Bumi Hidaka, So Wiley, Peter Leonard and Emma Munger. Thanks to all of the researchers that we spoke to for this episode, including Dr. Karen Conkoli, Dr. Benjamin Bard and Professor Ken Pala.
Starting point is 00:46:00 Also, a big thanks to the Zuckerman family and Joseph LeBell Wilson. Science Versus is a Spotify Studios original. Listen to us for free on Spotify or wherever you get your podcasts. If you are listening on Spotify, then follow us and tap the bell icon so you'll get notifications when new episodes come out. And if you like the show, please give us a five star review.
Starting point is 00:46:24 It really helps people find the show. I'm Wendy Zuckerman. Back to you next time.

There aren't comments yet for this episode. Click on any sentence in the transcript to leave a comment.