HOME >> MEDICINE >> NEWS
UCLA/VA research analysis in journal Nature explains wide variations in animal sleep habits

An extensive research analysis by a neuroscientist at UCLA's Semel Institute and the Veterans Affairs' Neurobiology Research Laboratory concludes that environment and diet largely determine sleep needs.

Appearing in the Oct. 27 edition of the peer-reviewed journal Nature, the analysis shows that meat-eating species sleep the most and grazing animals the least. Sleep amounts range from 20 hours in the little brown bat to only two hours in the horse. Animals that have less sleep do not appear to make up for this by sleeping more deeply.

The analysis concludes that sleep functions to keep animals safe by restricting waking to the hours when an animal is most likely to be successful at finding food and avoiding danger.

Human sleep follows the rules that determine sleep time in other animals, the analysis concludes. Humans sleep somewhat less than animals with similar physiological features, suggesting that we may have evolved to have more waking hours in order to better compete with other humans.

"Conventional wisdom in much of neuroscience has been that sleep has a single vital function across animals, just as food and water have universal functions," said Dr. Jerome Siegel, professor-in-residence at the UCLA Neuropsychiatric Institute and chief of neurobiology research at the VA Greater Los Angeles Healthcare System, Sepulveda.

"Yet some animals can go without sleep for long periods of time with no ill effects, whereas sleep deprivation in others can be lethal," Siegel said. "These new conclusions explain why some animals can survive and reproduce optimally with only a few waking hours, whereas others need to eat all day and must have reduced sleep time."


'"/>

Contact: Dan Page
dpage@mednet.ucla.edu
310-794-2265
University of California - Los Angeles
26-Oct-2005


Page: 1

Related medicine news :

1. UCLA/VA study: Many patients not receiving follow-up tests after positive screening for colon cancer
2. 1 of 2 pediatric kidney disease research centers in world established
3. Stanford researchers find culprit in aging muscles that heal poorly
4. UCLA researchers awarded $9M contract for study identifiying antibiotic treatment for MRSA
5. Indiana University Imaging Center receives $6M grant for kidney research
6. Penn researchers discover novel pathway for increasing good cholesterol
7. New research discovers independent brain networks control human walking
8. Theory of facial aging gets a facelift from UT Southwestern researchers
9. Sports concussion research using fMRI provides insight for safe return-to-play decisions
10. UIC researchers to develop new drugs to fight bioterrorism
11. New research finds high prevalence of smoking among physicians in China

Post Your Comments:
(Date:4/20/2015)... 2015 At the famous Avalon Hollywood ... Movie Awards” EcoLuxe Lounge, with Choices Recovery as the ... of sustainable product placement in TV and film, gathered ... and ecologically sound goods and services for this daylong ... hosted the Choices Celebrity Interview Lounge, speaking with many ...
(Date:4/20/2015)... (PRWEB) April 20, 2015 Western ... Donahue, DNP, RN, NEA-BC, FAAN who was named ... Education and Research in September 2014, is transitioning ... Officer to lead the development of Western Connecticut ... newly created role, Donahue will be responsible for ...
(Date:4/20/2015)... NJ (PRWEB) April 20, 2015 The normal ... stroke. There’s nothing more we could do.” Especially if the ... , Today, the response should be much different. So it’s ... question: “What more can be done?” , Not every ... “There is something that can be done.” But, according to ...
(Date:4/20/2015)... York (PRWEB) April 20, 2015 ... representing the U.S. health insurance industry, is seeking ... of the recent controversy involving surgical tools called ... to U.S. Senator Robert Casey (D-PA) dated April ... surrounding uterine morcellation point to “serious gaps in ...
(Date:4/20/2015)... 20, 2015 TROY Healthcare Solutions will ... Enterprise (TSPE) software, which provides the ultimate level of ... 6 at the Anthem Suite Hotel in the Socrates ... 11 AM. , Beginning at 7 AM, TROY Healthcare ... AM, TROY Healthcare Solutions will offer brief 15-20 minute ...
Breaking Medicine News(10 mins):Health News:Choices Recovery South Bend Talks About Healthy Decisions with TV's Adrienne Janic 2Health News:Nursing Executive to Develop and Lead Nursing Leadership Program at Western Connecticut Health Network 2Health News:"What More Can Be Done?” – The Critical Question That Can Save a Stroke Victim 2Health News:"What More Can Be Done?” – The Critical Question That Can Save a Stroke Victim 3Health News:Power Morcellator Lawyers at Bernstein Liebhard LLP Comment on Insurance Trade Group’s Call for Greater Regulation of Medical Devices 2Health News:Power Morcellator Lawyers at Bernstein Liebhard LLP Comment on Insurance Trade Group’s Call for Greater Regulation of Medical Devices 3Health News:Power Morcellator Lawyers at Bernstein Liebhard LLP Comment on Insurance Trade Group’s Call for Greater Regulation of Medical Devices 4Health News:TROY Healthcare to Offer Prescription Solutions that Could Save a Health System $100,000 2Health News:TROY Healthcare to Offer Prescription Solutions that Could Save a Health System $100,000 3
(Date:4/20/2015)... Increasing unnecessary regulations on drug plans could ... get their medications through a managed drug plan, according ... for Policy Analysis Senior Fellow Devon Herrick. ... managed efficiently helps makes medications affordable," says Herrick. "Blatant ... as consumer protections, but more often than not they ...
(Date:4/20/2015)... , April 20, 2015 International ... pleased to provide shareholders with the following update ... Products Historically, INIS has ... to fabricate several models of sealed sources for ... such as radiation therapy, security examination, and radiography.  ...
(Date:4/20/2015)... , April 20, 2015 Stand Up To Cancer ... of a $20 million Dream Team to attack the number ... the Annual Meeting of the American Association for Cancer Research ... that 221,000 people in the United States ... 2015, and 158,040 will die from it, making lung cancer ...
Breaking Medicine Technology:Restrictive Drug Plan Regulations Will Hurt Patients 2International Isotopes Inc. Provides Shareholders With An Update On New Opportunities And Positive Developments Within Its Existing Business Segments 2International Isotopes Inc. Provides Shareholders With An Update On New Opportunities And Positive Developments Within Its Existing Business Segments 3International Isotopes Inc. Provides Shareholders With An Update On New Opportunities And Positive Developments Within Its Existing Business Segments 4International Isotopes Inc. Provides Shareholders With An Update On New Opportunities And Positive Developments Within Its Existing Business Segments 5New SU2C-American Cancer Society Lung Cancer Dream Team Announced 2New SU2C-American Cancer Society Lung Cancer Dream Team Announced 3New SU2C-American Cancer Society Lung Cancer Dream Team Announced 4New SU2C-American Cancer Society Lung Cancer Dream Team Announced 5New SU2C-American Cancer Society Lung Cancer Dream Team Announced 6
Cached News: