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Posts with tag: rest | Return to HealthNewsBlog.com Homepage
Michael Jackson Has Cardiac Arrest
Michael Jackson suffered from a cardiac arrest and died. CNN's Elizabeth Cohen explains what a cardiac arrest is and how it is different than a heart attack. A cardiac arrest is when a heart stops functioning. Rescu usually only works when someone gets it within ten minutes but the outcome is usually not good if the person is not helped within three to five minutes.
Posted on June 26, 2009
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Sleeping Soundly Provides Memory Boost
 Need to learn something? Try an intense period of studying followed by a good night's sleep. The BBC reports that a study has confirmed that sleep does indeed help with memory. The study found that sleep appears to help strengthen nerve connections in the brain.
The researchers studied a group of 32 volunteers who were taught a new skill or shown images they would later have to remember.
The skill tasks included trying to follow a moving dot on a computer screen using a joy stick.
One group of participants was then allowed to sleep normally for eight hours, while others were deprived of sleep or only permitted a nap.
The next day they were asked to repeat the tasks or recall the images while their brains were scanned using a technique known as functional magnetic resonance imaging (fMRI).
Those who had slept properly performed better, and this was reflected in their brain activity.
Lead researcher Dr Sophie Schwartz said: "Our results revealed that a period of sleep following a new experience can consolidate and improve subsequent effects of learning from the experience.
It isn't a new idea that sleeping can help with retention but it is interesting to have a scientific study confirm this widely held belief. Sleeping appears to be a great way to help the brain process new information. The scientists were not sure exactly how much sleep was needed for the best results but it seems pretty obvious that a constant lack of sleep can become very disruptive both cognitively and physically.
Posted on July 14, 2008
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