Napping is good for your brain

Taking a nap for a few hours on a regular basis beneficial improve health.

New research proves napping is good for improving memory. Also disclosed in the research of memory that has to do with the award strengthened by sleep. Short nap after learning also proved beneficial.

The research leader, Dr. Kinga Igloi of the University of Geneva said, "The prize may act as a kind of marker, wraps information in the brain during learning. During sleep, the information was consolidated both with information related to the low prize, and transferred to the brain area storing long-term memory. "

"Our findings are relevant to understand the devastating effects of sleep deprivation," he added.

To get to that discovery, Dr. Igloi and team examined 31 healthy volunteers. They were randomly assigned to a group or groups of waking sleep and sensitivity to reward both groups were measured together.

The volunteer whose brains got scanned while they were trained to remember pairs of images.

Eight series of images are shown and the volunteers were told that in view of the four pairs of the picture will get bigger prizes. Following a break of 90 minutes with sleep or rest, they tested the memory of the pairs of images and asked to rate how confident they are in giving the correct answer.

Volunteers are also asked to take part in a surprise test with the same state three months later. Both groups better performance for those who received the higher prize but the group that slept in view of better overall.

Researchers noted a striking discovery, during a surprise test three months later the volunteers who slept after learning selectively pair with a better image with bigger prizes.

Those who sleep are also more confident to answer correctly during the memory test, even three months later. MRI scans revealed the sleep group experienced greater activity in the hippocampus, a small area in the brain important for memory form.

It is associated with a higher number of bursts of brain activity called slow spindle. After three months of sleep group also showed increased connectivity between the hippocampus, medial prefrontal cortexdan strriatum, areas in the brain involved in memory consolidation and gift-giving process.

Dr. Igloi said, "We already know that sleep helps strengthen memory, but we also now know sleep helps select and retain memory with a value greater gift."

"It makes sense that memory consolidation adjustments should work to prioritize information which is important for the success and survival," he said. This discovery was published in the journal elifeMall.