Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


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."

Dan Page | EurekAlert!
Further information:

More articles from Life Sciences:

nachricht Novel mechanisms of action discovered for the skin cancer medication Imiquimod
21.10.2016 | Technische Universität München

nachricht Second research flight into zero gravity
21.10.2016 | Universität Zürich

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Resolving the mystery of preeclampsia

21.10.2016 | Health and Medicine

Stanford researchers create new special-purpose computer that may someday save us billions

21.10.2016 | Information Technology

From ancient fossils to future cars

21.10.2016 | Materials Sciences

More VideoLinks >>>