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Posts Tagged ‘Learning’

How Your Dreams Can Make You Smarter

Posted by Ram Kumar Shrestha on January 5, 2012

New research shows dreaming about a task gives you an edge in real life

It’s late in the evening: time to close the book and turn off the computer. You’re done for the day. What you may not realize, however, is that the learning process actually continues — in your dreams.

It might sound like science fiction, but researchers are increasingly focusing on the relationship between the knowledge and skills our brains absorb during the day and the fragmented, often bizarre imaginings they generate at night. Scientists have found that dreaming about a task we’ve learned is associated with improved performance in that activity (suggesting that there’s some truth to the popular notion that we’re “getting” a foreign language once we begin dreaming in it). What’s more, researchers are coming to recognize that dreaming is an essential part of understanding, organizing and retaining what we learn — and that dreams may even hold out the possibility of directing our learning as we doze.

(MORE: Paul: The Power of Smart Listening)

While we sleep, research indicates, the brain replays the patterns of activity it experienced during waking hours, allowing us to enter what one psychologist calls a neural virtual reality. A vivid example of such reenactment can be seen in this video, made as part of a 2011 study by researchers in the Sleep Disorders Unit at Pitié-Salpêtrière Hospital in Paris. They taught a series of dance moves to a group of patients with conditions like sleepwalking, in which the sleeper engages in the kind of physical movement that is normally inhibited during slumber. They then videotaped the subjects as they slept. Lying in bed, eyes closed, the woman on the tape does a faithful rendition of the dance moves she learned earlier — “the first direct and unambiguous demonstration of overt behavioral replay of a recently learned skill during human sleep,” writes lead author Delphine Oudiette.

Of course, most of us are not quite so energetic during sleep — but our brains are busy nonetheless. While our bodies are at rest, scientists theorize, our brains are extracting what’s important from the information and events we’ve recently encountered, then integrating that data into the vast store of what we already know — perhaps explaining why dreams are such an odd mixture of fresh experiences and old memories. A dream about something we’ve just learned seems to be a sign that the new knowledge has been processed effectively. In a 2010 study published in the journal Current Biology, researchers at Harvard Medical School reported that college students who dreamed about a computer maze task they had learned showed a 10-fold improvement in their ability to navigate the maze compared to participants who did not dream about the task. Read the rest of this entry »

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The world’s top ten most desolate countries

Posted by Ram Kumar Shrestha on August 13, 2011

by Justin Delaney (RSS feed)

most desolate


According to a Harvard study
, the earth’s population will hit seven billion humans in a few months. Earlier this summer, Gadling labs profiled the effects of increasing populations on finite land resources by showcasing the world’s most crowded islands. The earth is, in its own way, an island, and 21st century humanity will be presented with the challenge of adapting to rising population levels and static resources.

While countries like India have wrestled with the conundrum of feeding and housing booming population levels in Delhi, Kolkata, and Mumbai, the countries on this list bear no similarities to the billion strong Indian subcontinent. These countries are the ones with open space – lots of it. Countries like Greenland and Mongolia may someday be utilized for their vast expanses of open terrain, but today they are simply great places to go when you have tired of other human beings.

So while this extraordinarily hot summer may have included elbowing your way through thronged midtown Manhattan in 100 degree heat or hesitantly inhaling the stink rising off the sweaty crowd at Bonnaroo, this list is intended to take you way away from the crowds. From riding a horse through the empty steppes of Mongolia to exploring the glacial highlands ofIceland, each of these countries offers exercises in sweet sweet solitude. None of these countries have more than ten people per square mile.

10 Mauritania
Location: Northwest Africa
Population: 3,069,000
Population density: 8.2 humans per square mile
Primary Airport: Nouakchott International Airport
Primer: Mauritania is a sand swept country offering desolation and one of the lowest GDPs on the African continent. Even the well-traveled must consult an atlas to correctly place the country on their mental map. Heavily mined in the east with empty beaches in the West, the country is one of the least visited locations on the planet. Credit cards are not readily acceptable, rain is scarce, and desert covers over half of this one time French occupation. Throw in strained African/Arab relations and you get a very challenging country to visit.

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