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:10/25/2014)... Minneapolis, Minnesota (PRWEB) October 25, 2014 ... a testing firm which verifies IT-accessibility for disabled ... their Access Approved® logo to Mackin Educational ... digital resource management system and to the ... for the "Own Best Medicine" website. ...
(Date:10/25/2014)... 25, 2014 Mesothelioma researchers are reporting ... receive pemetrexed (Alimta), after his combination drug therapy became ... story , just posted on the Surviving Mesothelioma website. ... Medical Center in Japan suggests that “maintenance therapy” with ... who cannot tolerate higher doses of cisplatin. ...
(Date:10/25/2014)... Researchers who discovered antibiotics in farmed and wild ... The use of antibiotics in animals, including ... to the development of antibiotic-resistant bacteria that threaten ... study. Each year in the United States, ... kill about 23,000, according to the Infectious Diseases ...
(Date:10/22/2014)... At a time when the national concussion ... at all levels, the UPMC Sports Medicine Concussion ... where two powerful messages are lost: Concussions can be ... full recoveries every day. , In striving to shift ... research, UPMC and the Concussion Program are unveiling the ...
(Date:10/22/2014)... Springfield, Va. (PRWEB) October 22, 2014 For ... way to make money; it’s an extension of her life’s ... her latest venture as the owner of FirstLight HomeCare, make ... , “It’s important to me that my work makes a ... always harbored an entrepreneurial spirit, so after much research, I ...
Breaking Medicine News(10 mins):Health News:IT-Accessibility Award Granted to Education and Health Care for Section 508/WCAG 2Health News:IT-Accessibility Award Granted to Education and Health Care for Section 508/WCAG 3Health News:New Report Illustrates Extended Mesothelioma Survival with “Maintenance Therapy”, According to Surviving Mesothelioma 2Health News:Researchers Say Antibiotics in Fish a Health Concern 2Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 2Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 3Health News:University of Pittsburgh Medical Center Launches Initiative to Emphasize Concussions Are Treatable 4Health News:Dr. Iris Hunter to Host Grand Opening of FirstLight HomeCare Tomorrow 2
(Date:10/22/2014)... 2014 A new report by ... type, Form, End user, Application and Geography) - Size, ... Report, Opportunities, Segmentation and Forecast, 2013 - 2020", considers ... on key trends tracked, it is anticipated that the ... by 2020, registering a CAGR of 6.2% from 2014 ...
(Date:10/22/2014)... 2014  With a vision to ensure safety ... Global Pharmaceutical and Biotech manufacturer selects and implements ... solution to protect their animal health brand.  ... Photo - http://photos.prnewswire.com/prnh/20141021/153439 ... aggregated by the Xyntek and Antares solution is ...
(Date:10/22/2014)...   BioNano Genomics , the genome mapping ... to purchase an Irys™ System . Among them ... (NCI), NIH Intramural Sequencing Center (NISC) and Genoscope (The ... comprehensive view of a genome was a major ... deliver the scalability or reliability to detect and ...
Breaking Medicine Technology:Global Disposable Gloves Market Expected to Grow to $7.9 Billion by 2020 - Allied Market Research 2Global Disposable Gloves Market Expected to Grow to $7.9 Billion by 2020 - Allied Market Research 3Global Disposable Gloves Market Expected to Grow to $7.9 Billion by 2020 - Allied Market Research 4Xyntek and Antares Serialization Solution Protects Pets Too! 2BioNano's Irys System Adopted by Leading Genomics Centers for Comprehensive Detection of Human Genome Structural Variation 2BioNano's Irys System Adopted by Leading Genomics Centers for Comprehensive Detection of Human Genome Structural Variation 3
Cached News: