Navigation Links
Understanding the Effects of Sleep Deprivation on Decision-Making

Dr. Sean Drummond, a Department of Defense-funded researcher has tried to unplug the impact of sleep deprivation on the brain and its effects// on decision-making and the requisite period for getting back to normal after periods of sleeplessness. This study has been especially beneficial for the military operations, where working without sleep especially during crisis is quite the norm rather than the exception.

"We can't keep as many things online at any one time when we're sleep deprived. Sleep deprivation significantly impairs attention, working memory performance, our ability to drive. It has the same effect as alcohol does," said Drummond, who works with the University of California San Diego and the Veterans Affairs San Diego Healthcare System.

In the May issue of Flying Safety Magazine, Capt. Brain Drummond, a pilot in a KC-135 air refueling tanker in Iraq recounted a potentially accident-causing mistake he made in March during a refueling mission when he let too much fuel out of a tank, causing an imbalance in the aircraft. He believes the mistake resulted from too many missions with too little sleep. After flying 12 six- to seven-hour missions and fulfilling all the briefing, debriefing and aircraft pre- and post-flight requirements, he recalled that he and the crew looked like "the walking dead."

"I don't think you really know the fatigue that sets into your body until you are finally able to rest," he said. "Even though I was getting enough rest at night during the 11 straight sorties, my body and senses became very numb. I truly believe, because of the demand for the missions in OIF (Operation Iraqi Freedom), our crew had become so tired that we forgot the little things, which can add up to big things."

Because of incidents like Drummond's the DoD's Peer Reviewed Medical Research Program funds research like Drummond's. Congress created the program in 1999 to promote research in health issues the military f aces. Since its inception through 2005, the program has spent almost $300 million to fund nearly 200 projects in a range of medical topics, including combat casualty care and technology and infectious disease research.

The researcher and his team recruited 40 volunteers with good sleep habits who agreed to live in a lab for six days. For their stay, volunteers lived two normal days and nights, stayed awake for 64 hours and then were allowed again to sleep so the team could observe the recovery process.

During the volunteers' awake hours, they underwent half-hour long learning, memory and decision-making tests every two hours to see how well they fared at different stages of sleep deprivation. One test, for example, had the volunteers memorize lists of nouns. Drummond and his team also used functional magnetic resonance imaging in the morning and evening to map the brain's reaction. The imaging technique looks at oxygen use in the brain, so whatever part of the brain is being used, it needs more oxygen.

"The brain is a system, a network of areas, all of which work together to get a task done," he said.

The researcher found that volunteers' working memory wasn't affected after 36 hours without sleep, not because they were all healthy and had an average age of 24 years, but because other regions of the brain jumped in to help.

"The brain can actually compensate for this level of sleep deprivation. Areas that don't normally turn on when a person is well rested came online when the person was sleep deprived," Drummond said. "The better they're able to engage them, the better they're able to do after sleep deprivation."

After 60 hours, though, most volunteers didn't fare as well on their tests as they had at the 36-hour mark. After two and a half days without sleep, their brains could not recruit help.

"I think it will be important to use these data to try to better predict and underst and who is going to be resilient to sleep loss and who is going to be vulnerable," Drummond said. "The benefits will come in better understanding the consequences of sleep deprivation for more complex types of cognitive functions -- as opposed to simple attention, for example -- as well as better understanding how long the recovery process takes."

Drummond's team also found that recovering from 64 hours of sleep loss wasn't as simple as getting a few good nights' rest.

"We found on some tasks that people aren't back at the baseline level even after two full nights of sleep, given that they only lost two nights of sleep," he said. "Given the pervasiveness of inadequate sleep in the military and civilian worlds alike, there is clearly a need to understand what this is doing and can it be counteracted."

(Source: EurekaAlert)
'"/>




Related medicine news :

1. Understanding The Predictors Of Prostate Cancer
2. Understanding Restless Legs Syndrome
3. Understanding Lung Cancer Metastasis
4. Understanding The Link Between Hormone Replacement and Respiratory Disease
5. Understanding The Risks Of Hormone Therapy
6. Understanding The Link Between Metabolic Syndrome And Drinking Patterns
7. A Better Understanding Of The Brain Network
8. Understanding The Predictor’s Of Alzheimer’s Diseae
9. Understanding The Harmful Effects Of Radiation Exposure
10. Understanding The Origin Of Tumors
11. Understanding Insulin Resistance
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/23/2017)... , ... June 23, 2017 , ... Everybody has their ... while others prefer to read it, and some people don't like it at all. ... Here's what they found: , Erotic literature can give readers a taste of their ...
(Date:6/23/2017)... ... June 23, 2017 , ... 21 Middle East and South Asia Leaders Selected ... from government, business and civil society in 11 countries across the Middle East and ... in a transformative exchange of knowledge and ideas with the leading minds in their ...
(Date:6/23/2017)... ... 23, 2017 , ... Ulster University, Magee Campus in Northern Ireland is hosting ... pm to present to graduate students exciting new and innovative hope research based on ... by The Health Improvement Service of the Western Health & Social Care Trust (WHSCT) ...
(Date:6/23/2017)... ... June 23, 2017 , ... Moore Insurance, ... area with access to asset protection and financial planning services, is teaming up ... improving the lives of children with cancer and other chronic diseases. , The ...
(Date:6/22/2017)... ... June 22, 2017 , ... ... from the American Heart Association (AHA) to launch a Rheumatic Heart Disease Center, ... prevention and diagnosis of rheumatic heart disease (RHD) in high-risk, financially disadvantaged countries ...
Breaking Medicine News(10 mins):
(Date:6/16/2017)... , June 16, 2017  Exactly 50 years ago ... off what later became known as the San Francisco "Summer ... ) is unveiling two radical innovations in strategic market research ... This announcement marks the beginning of Northern Light,s "Summer of ... ...
(Date:6/12/2017)... , June 12, 2017 Kineta, Inc., a biotechnology ... Kineta Vice President of R&D and Head of ... Pandemic Preparedness for the Northwest and Beyond meeting ... on June 14, 2017 from 8:30-10:30 AM PDT at the ... Dr. Bedard will be joined by other ...
(Date:6/8/2017)... MAITLAND, Fla. , June 8, 2017  Less ... ransomware attack that hit more than 200,000 companies, including hospital ... is being heralded as one of the largest online ... technology in the healthcare market, it is imperative that ... can protect their data from this — and many ...
Breaking Medicine Technology: