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:
*Name:
*Comment:
*Email:


(Date:6/23/2017)... ... , ... Ross Insurance Agency ( http://www.rossinsuranceagency.com ) saves clients ... (FEMA) recent update of flood zones, more people than ever are in flood ... to reflect the actual risk in flood zone areas during a time when ...
(Date:6/23/2017)... (PRWEB) , ... June 23, 2017 , ... ... management, financial planning, and related services to families and business owners in and ... charity drive to benefit senior citizens in the area. , Meals on Wheels ...
(Date:6/23/2017)... ... June 23, 2017 , ... Radabaugh & Associates, a ... and business owners in North Central West Virginia, is embarking on a cooperative ... abled residents in the region. , The Stepping Stones organization offers a series ...
(Date:6/22/2017)... ... June 22, 2017 , ... Plastic Surgery Associates is proud to ... for 2017. Each year, research and information firm, Castle Connolly, releases their list of ... 2015, this marks the 3rd time that Dr. Canales has been recognized ...
(Date:6/22/2017)... ... June 22, 2017 , ... Children’s National Health ... Association (AHA) to launch a Rheumatic Heart Disease Center, with the goal of ... rheumatic heart disease (RHD) in high-risk, financially disadvantaged countries and low-income communities across ...
Breaking Medicine News(10 mins):
(Date:6/9/2017)... AirXpanders, Inc. (ASX: AXP) (AirXpanders or Company), ... sale and distribution of the AeroForm® Tissue Expander System, ... commercial roll-out in the United States ... hundred (100) medical institutions and health systems, located throughout ... alternative for women who choose reconstructive surgery following a ...
(Date:6/8/2017)... 8, 2017  StatLab Medical Products ("StatLab" ... manufacturer of diagnostic supplies for the anatomic ... & Company LP ("Cressey & Company"), a ... growth-focused investment in the Company. Cressey & ... from selling shareholder, Prairie Capital, L.P., with ...
(Date:6/5/2017)... , June 5, 2017 The Cincinnati ... of Diplomat Pharmacy, Inc. (NYSE: DPLO), has been awarded a ... Enquirer . Results are based on an employee ... organizational health and workplace improvement. The survey measures several aspects ... ...
Breaking Medicine Technology:
Cached News: