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Posts Tagged "sleep"

@ScientificAmerican

Transcript: Live Chat with SA Blogs Editor Bora Zivkovic on Clocks, Metabolism and Evolution

Circadian rhythms and disrupted sleep cycles were the hot topics during a live 30-minute chat that I hosted on Friday, June 1, with SA Blogs Editor Bora Zivkovic. An edited transcript follows. Thanks to SA Senior Product Manager Angela Cesaro for technical support. (For further reading on circadian rhythm research, you can start by looking [...]

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Expeditions

Step into the Twilight Zone: Day 36, Experiment Ends!

sunset on Mars

Tonight I will go to bed when I am tired, and tomorrow I will rise when I please: My Mars time experiment is over. For five weeks I’ve stayed put geographically, but my circadian rhythms have marched westward, advancing two-thirds of a time zone each morning to match the 24.65-hour day of our neighbor planet. [...]

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Expeditions

Stepping into the Twilight Zone: Day 33, or, Curiosity Killed by a Cosmic Ray

a recent Mars Curiosity rover self-portrait

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American last month describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” at [...]

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Expeditions

Step into the Twilight Zone: Day 29, or God in Outer Space

Spirit-safe sweeping

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American last month describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars [...]

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Expeditions

Step into the Twilight Zone: Day 25, or A Walk Through Santiago’s Witching Hour

“The witching hour, someone had once whispered to her, was a special moment in the middle of the night when every child and every grown-up was in a deep deep sleep, and all the dark things came out from hiding and had the world all to themselves.” Roald Dahl, “The BFG,” about five minutes before [...]

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Expeditions

Step into the Twilight Zone: Day 22 on Mars Time – Meteoric Changes to the Earth Day, as Told by a Thousand Tired Decisions

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American last month describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” [...]

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Expeditions

Step into the Twilight Zone: Day 18, Cuddle Cafes and the Dangers of Dozing

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific Americanearlier this week describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” [...]

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Expeditions

Step into the Twilight Zone: Day 15 on Mars Time, or Adventures in Extraplanetary Day Drinking

beer cans at dawn

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” at [...]

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Expeditions

Step into the Twilight Zone: Day 11 on Mars Time, in Which I Give Myself Cancer

Santiago metro station and train pulling into station

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” at [...]

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Expeditions

Step into the Twilight Zone: Day 8 on Mars Time, aka Camping on Mars (Time)

hitchhiker

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” at [...]

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Expeditions

Step into the Twilight Zone: Day 4 on Mars Time, aka Easy Peasy Lemon Squeezy

Katie

Editor’s note: Researchers exploring Mars via rover and satellite have to adapt to the longer day on the Red Planet. Katie Worth, whose Can Earthlings Adapt to the Longer Day on Mars? for Scientific American describes the consequences of sleep-pattern changes, is trying it out herself. Follow her experiences in living on “Mars time” at [...]

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Guest Blog

Caring for the Patient When the Patient Doesn’t Care

Homeless man in Los Angeles, CA

In medical school, we learn that our job is to help our patients. This point seems so obvious that we take it for granted; we tell ourselves that this is the purpose served by the endless hours in the library and late nights on the wards. In the abstract, it seems like a simple concept. [...]

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Guest Blog

Too Hard for Science?: The sense of meaning in dreams

In dreams, could we discover where the mysterious feeling of revelation comes from? In "Too Hard for Science?" I interview scientists about ideas they would love to explore that they don’t think could be investigated. For instance, they might involve machines beyond the realm of possibility, such as particle accelerators as big as the sun, [...]

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Illusion Chasers

Your Brain on Thanks

800px-Frances_Brundage_Thanksgiving

Thanksgiving is my favorite holiday. It may not have the cache of winter holidays or the Cash! Yay! of a birthday, but it is the best feel-good holiday of the year. At least it feels that way to me. But why is that? Of all the wonderful annual holidays, why would I prefer a single meal, shared with family, loved ones, and friends? Many of these holidays include similar meals. What makes Thanksgiving different for my brain?

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Illusion Chasers

Fat Tuesday: Does Jet-Lag Make You Chronobese?

http://commons.wikimedia.org/wiki/File:Cooked_crayfish_with_dill.jpg

Chronic jetlag, habitual night shifts, and rotating shift work, can have deleterious consequences on circadian organization and metabolic health, says a new report in the Annals of the New York Academy of Science. The reason may be the significant crosstalk between the circadian system and the metabolic system, leading to “chronobesity”.

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Illusion Chasers

The Neural Magic of Hypnotic Suggestion

journal_cover201308

A new review of the scientific literature studying hypnosis, in the journal Nature Reviews Neuroscience, by Oakley and Halligan, discusses the potential for hypnosis to provide insights into brain mechanisms involved in attention, motor control, pain perception, beliefs and volition and also to produce informative analogues of clinical conditions.

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Illusion Chasers

Join a Think Tank in NYC!

TTT-model

The Think Tank is a mobile cognitive science lab and education station that will harness intrinsic interest in the human brain.

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Illusion Chasers

To sleep perchance to learn

http://commons.wikimedia.org/wiki/File:Sleeping-girl.jpg

A recent study published in Nature Neuroscience shows that humans can acquire entirely new information while they sleep.

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MIND Guest Blog

Why We Are Not Getting Enough Sleep

Glorious, refreshing sleep is eluding the majority of Americans. According to the National Sleep Foundation’s 2013 International Bedroom Poll 56 percent of people between the ages of 25 and 55 get an insufficient amount of sleep on workdays. On non-workdays individuals are then more likely to oversleep. They spend an additional 45 minutes catching Z’s in [...]

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Observations

Less Sleep Means More Stress for Teens

107px-Smiley_green_alien_sleepy.svg

Teens stay up late at night and sleep late into the morning, a result of a natural shift in their circadian rhythms. That biological schedule puts them at odds with the adult world, as well as early start times for high school. But does the mismatch cut down on how much they actually sleep, and [...]

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Observations

How Your Smartphone Messes with Your Brain—and Your Sleep

Light from those screens triggers a chemical reaction that makes you think it is morning

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Observations

Beat Jet Lag with This Scientist-Developed App

Fed up with jet lag when you fly long distances? University of Michigan mathematicians have your back. They’ve developed a free app, available today, based on mathematical models that can tell you when to go outdoors and when to stay in bed to avoid the sleepiness and other side effects of crossing multiple time zones [...]

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Observations

5 (Scientific) Reasons to Stay Single This Summer

For better or worse, humans do not have a distinct “mating season.”  Healthy females ovulate every month, which means that mating too can take place any time of year. And that’s just the “reproductive” sort of sexual behavior, which is to say, a very small portion of the sexual behavior we merrily exhibit.  So then, [...]

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Observations

DUD: The Nightmarish Dangers of Drowsy Driving

drowsy driving accidents common

Driving under the influence of alcohol or drugs is known to increase the chances of causing an accident. For instance, marijuana can impair drivers’ reaction time. But what about drowsiness? As many as a third of all fatal car crashes might involve fatigued drivers, according to research by the National Highway Traffic Safety Administration. And [...]

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Observations

Sleep Violence: A Real Danger, Little Understood

Lady Macbeth sleepwalking, painting by Henry Fuseli

Last month, psychiatrists at Stanford University announced that sleepwalking is on the rise. More than 8.4 million adult Americans—3.6 percent of the population over 18—are prone to sleepwalking. That’s up from a 2 percent prevalence the same authors found a decade ago. And as the latest issue of Scientific American Mind notes, a subset of [...]

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Observations

Shift Workers in Dangerous Industries Most Likely to Be Short on Sleep

worker short on sleep

It’s always nice to get the full recommended seven or nine hours of sleep every day. But life—and work—often gets in the way. And getting too little sleep can decrease attention and short-term memory and can also alter rational judgment—in addition to increasing the risk for some diseases and making it harder to lose weight. [...]

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Observations

Short on sleep, the brain optimistically favors long odds

risky behavior gambling

Sleep deprivation can lead to plenty of unwise decisions, which researchers have long tied to flagging attention and short-term memory. But a new study shows how just one night of missed sleep can make people more likely to chase big gains while risking even larger losses—independent of their tapering attention spans. A team of Duke [...]

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Observations

Sleep might help dieters shed more fat

woman sleeping, which might be key to helping body lose extra fat

Laying up for a solid night’s sleep might not sound like the best recipe for weight loss, but loads of research has pointed to the importance of sufficient shut-eye to losing weight. And a small new study shows that not getting enough sleep might severely cut into people’s ability to lose extra fat.  Researchers found [...]

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Observations

Night sight: Our eyes scan the action in our dreams

Our eyes swivel restlessly in their sockets during rapid eye movement (REM) sleep, an aptly named period of intense dreaming that makes up 20 to 25 percent of total sleep time. Whether this fidgeting is random or serves a function has never been clear, but a new study suggests that our eyes shift their gaze [...]

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Streams of Consciousness

When Sleeping Turns Deadly and Other Strange Tales from Scientific American MIND

The July/August issue of Scientific American Mind made its debut online late last week. Here I divulge some of the more surprising and useful lessons from its pages. Dozing Dangerously Sleepwalking is one of the strangest phenomena I have ever witnessed. Despite its name, it doesn’t resemble any other kind of sleep I’ve seen. To [...]

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Talking back

Sleep’s Role in Obesity, Schizophrenia, Diabetes…Everything

Is sleep good for everything? Scientists hate giving unqualified answers. But the more sleep researchers look, the more the answer seems to be tending toward a resounding affirmative. The slumbering brain plays an essential role in learning and memory, one of the findings that sleep researchers have reinforced repeatedly in recent years. But that’s not [...]

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