By Emma Young
We all know that too little sleep is bad for us. Matthew Walker, a UC Berkeley sleep scientist and author of the best-selling Why We Sleep, has gone so far as to declare: “The shorter you sleep, the shorter your life.” However, some researchers fear that our concerns about not getting enough sleep are becoming overblown — and that, ironically, they could be making the problem worse. In this feature, we take a look at evidence that “too little” sleep isn’t always the disaster that it’s held up to be. Continue reading “Feeling Sleepy? Six Findings That Reveal The Nuanced Effects Of Poor Sleep”
By Emma Young
Are you an evening person — an owl? Or a morning person — a lark? No end of studies have reported variations in the functioning of people who like to wake and go to bed late, versus those who are early to bed and early to rise. And now a new study, published in PLoS One, has found links between our “chronotype” and the way we handle emotions, reflect on our thoughts and feelings, and assert ourselves. Overall, owls do worse. And this, argues Juan Manuel Antúnez at the University of Malaga, Spain, could help to explain links between being an owl and poorer psychological well-being.
Continue reading “Night Owls May Use Poorer Emotion Regulation Strategies Than Early Birds”
By Emma Young
“At least since the philosophers of ancient Greece, scholars have pointed out the analogy between madness (psychosis) and dreaming…” So begins a new paper, published in PLoS One, that seems to shore up that analogy.
Dreams and psychotic hallucinations do have things in common. They both feature perceptual sensations that seem real, but which are conjured up by our brains.
However, there are also differences. While dreams are known to be highly visual, psychotic hallucinations are primarily auditory. They generally involve hearing things that aren’t real rather than seeing things that don’t exist. And this difference is an important reason why “the idea of dreaming as a model for psychosis has remained speculative and controversial,” write Roar Fosse of the Vestre Viken Hospital Trust, Norway, and Frank Larøi of the Norwegian Centre of Excellence for Mental Disorders Research at the University of Oslo.
However, to date, there’s been very little investigation into perceptions of sounds in dreams, the pair reports. And now they have data suggesting that, in fact, auditory perceptions are common. If this is the case, the links between psychotic experiences and dreams may be stronger than has been recently supposed.
Continue reading “Dreams Aren’t Just Visual: We Often Hear Voices And Other Sounds Too”
By Emily Reynolds
Though some research has challenged the common conception that scent is the most evocative of all the senses, it can be undeniably powerful when you catch a whiff of something that jogs a memory. We also know that scent plays a part in sexual attraction: people with a keener sense of smell often find sex more pleasant and may even have more orgasms during sex, and the scent of a partner can reduce stress and increase feelings of safety.
So new research findings from a team at the University of British Columbia may not come as a complete surprise. In a paper published in Psychological Science, Marlise Hofer and Frances Chen suggest that the scent of your lover may not just be comforting but can also help you drift off to sleep. Continue reading “Trouble Sleeping? The Scent Of Your Lover Might Help”
By Emily Reynolds
You’re exhausted. You’ve had a long day at work before coming home to make dinner, do some chores and relax, and now it’s time for bed. But for some reason — despite the fact you’ve been struggling to stay awake all day — you can’t quite bring yourself to stop what you’re doing and go to sleep.
If this sounds familiar, you’ll be pleased to hear that you’re not the only one who lacks willpower when it’s time to go to bed. It’s so widespread, in fact, that Katharina Bernecker from the Leibniz-Institut für Wissensmedien and Veronika Job at the Technical University of Dresden have investigated what could be driving the phenomenon in a new paper published in the British Journal of Psychology.
Continue reading “Why Some People Find It Harder To Drag Themselves To Bed At Night”
By Emily Reynolds
We tend to think of sleep as a positive thing. Not enough of it, and we suffer: our moods drop, and we find it harder to both concentrate on what’s in front of us and remember what’s happened. Being well-rested, on the other hand, is associated with greater ability to communicate, to achievement at home and at work, and to superior recollection of previously learned facts or events.
Based on what we already know about the benefits of sleep on memory it may seem obvious that going to bed would also help eyewitnesses identify those they had seen perpetrate crimes. But in a new study, published in Royal Society Open Science, researchers found no such association: it was confidence, not being well-rested, that made a difference. Continue reading “Getting Some Sleep Doesn’t Make Eyewitnesses Any Better At Identifying Suspects”
By guest blogger Freddy Parker
How did you sleep last night? If the answer is “badly” followed by an uninvited pang of anxiety, look no further for an explanation than a study published this month in Nature Human Behaviour.
A lack of sleep is known to lead to feelings of anxiety, even among healthy people. But the new paper reveals that the amount of “deep” or slow-wave sleep is most pertinent to this relationship. That, the authors conclude, is because slow-wave brain oscillations offer an “ameliorating, anxiolytic benefit” on brain networks associated with emotional regulation.
Continue reading “A Lack Of Sleep Causes Anxiety — But Don’t Worry About It”
By guest blogger Jack Barton
Technology and screens are supposedly the enemy of health. They ruin our sleep, mental health and we’re slaves to their constant need for attention. At least that’s what seems to be the consensus in the news. However, the reality is much more two-sided. In fact, a new study demonstrates that our blue light emitting devices can be a force for good — by providing a novel way to deliver mental health interventions.
Continue reading “Digital Therapy For Insomnia Shows How Technology Can Be Harnessed To Improve Sleep And Mental Health”
By Matthew Warren
Poor sleepers may be hoping that with the gradual liberalisation of marijuana laws around the world, a new drug to help them sleep will soon become legally available. Bad news, then, from a new diary study, published in Health Psychology, of people who take cannabis as a sleep aid. While the drug seemed to improve some aspects of sleep, it also led people to feel more tired the next day.
Continue reading “This Diary Study Suggests It’s Probably Not A Good Idea To Use Cannabis To Help You Sleep”
By Christian Jarrett
Your personality traits play an important part in how long you are likely to live, as much as, or even more than, other personal factors like your intelligence and your family’s economic background. Now a study in the Journal of Research in Personality has identified a key factor that mediates the personality-mortality link – sleep. Simply put, people with certain personality characteristics are more likely to sleep too little, or too much, or to experience greater sleepiness during the day, and in turn this raises their year-on-year risk of dying (too little or excess sleep, and poor quality sleep, have known links with various health risks, such as cardiovascular disease, depression and chronic inflammation).
“Sleep has been associated with both personality and longevity, yet [before now] no study has investigated whether sleep is a pathway linking personality to objective health outcomes,” say the researchers, led by Shantel Spears at West Virginia University.
Continue reading “Researchers Identify Sleep As A Key Reason Why Personality Traits Predict Longevity”