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Lack of Sleep Can Slow You Down

  By posted Jul 31st 2012
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*Text courtesy IANS

*Images courtesy: © Thinkstock photos/ Getty Images


If you sleep only for five to six hours, it is bound to affect your work negatively. Experts recommend eight hours of sleep for ideal health and productivity.

Researchers at Brigham and Women's Hospital (BWH), a teaching affiliate of Harvard Medical School, have found that regardless of how tired you think you are, lack of sleep can influence the way you do certain tasks.

"Our team decided to look at how sleep might affect complex visual search tasks because they are common in safety-sensitive activities such as air-traffic control, baggage screening and monitoring power plants," Jeanne F. Duffy at BWH was quoted as saying in the The Journal of Vision.

"These types of jobs involve processes that require repeated, quick memory encoding and retrieval of visual information, in combination with decision making about the information," added Duffy.

Researchers collected and analyzed data from visual search tasks from a group of participants over one month's study. In the first week, all participants were scheduled to sleep 10-12 hours per night to make sure they were well rested.

For the following three weeks, the participants were scheduled to sleep the equivalent of 5.6 hours per night and also had their sleep times scheduled on a 28-hour cycle, mirroring chronic jet lag.

The research team gave the participants computer tests that involved visual search tasks and recorded how quickly the participants could find important information, and also how accurate they were.

The longer the participants were awake, the more slowly they identified the important information in the test, the team observed.

Additionally, during the biological night time, 12 a.m. to 6 a.m., participants (who were unaware of the time throughout the study) performed the tasks more slowly than they did during the daytime.

 

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