Featured Research

from universities, journals, and other organizations

New Analysis Explains Wide Variations In Animal Sleep Habits

Date:
October 28, 2005
Source:
University of California - Los Angeles
Summary:
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.

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.

Related Articles


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."

###

The Semel Institute of Neuroscience and Human Behavior at UCLA is an interdisciplinary research and education institute devoted to the understanding of complex human behavior, including the genetic, biological, behavioral and sociocultural underpinnings of normal behavior, and the causes and consequences of neuropsychiatric disorders. More information about the institute is available online at http://www.npi.ucla.edu/.

The VA Greater Los Angeles Health Care System's Neurobiology Research Laboratory is a part of the Sleep Research Group. This multidisciplinary group of investigators is pursuing innovative ways to prevent and treat sleep disorders. Current studies focus on body-temperature regulation during sleep, brain mechanisms regulating sleep and circadian rhythms, narcolepsy and its causes, and the role of sleep in epileptic events.


Story Source:

The above story is based on materials provided by University of California - Los Angeles. The original article was written by Dan Page. Note: Materials may be edited for content and length.


Cite This Page:

University of California - Los Angeles. "New Analysis Explains Wide Variations In Animal Sleep Habits." ScienceDaily. ScienceDaily, 28 October 2005. <www.sciencedaily.com/releases/2005/10/051027091307.htm>.
University of California - Los Angeles. (2005, October 28). New Analysis Explains Wide Variations In Animal Sleep Habits. ScienceDaily. Retrieved March 4, 2015 from www.sciencedaily.com/releases/2005/10/051027091307.htm
University of California - Los Angeles. "New Analysis Explains Wide Variations In Animal Sleep Habits." ScienceDaily. www.sciencedaily.com/releases/2005/10/051027091307.htm (accessed March 4, 2015).

Share This


More From ScienceDaily



More Mind & Brain News

Wednesday, March 4, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

This Nasal Treatment Could Help Ease Migraine Pain

This Nasal Treatment Could Help Ease Migraine Pain

Newsy (Mar. 2, 2015) Researchers gave lidocaine to 112 patients, and about 88 percent of the subjects said they needed less migraine-relief medicine the next day. Video provided by Newsy
Powered by NewsLook.com
How Facebook Use Can Lead To Depression

How Facebook Use Can Lead To Depression

Newsy (Mar. 1, 2015) Margaret Duffy of the University of Missouri talks about her study on the social network and the envy and depression that Facebook use can cause. Video provided by Newsy
Powered by NewsLook.com
The Best Foods to Battle Stress

The Best Foods to Battle Stress

Buzz60 (Feb. 26, 2015) If you&apos;re dealing with anxiety, there are a few foods that can help. Krystin Goodwin (@krystingoodwin) has the best foods to tame stress. Video provided by Buzz60
Powered by NewsLook.com
Sleeping Too Much Or Too Little Might Increase Stroke Risk

Sleeping Too Much Or Too Little Might Increase Stroke Risk

Newsy (Feb. 26, 2015) People who sleep more than eight hours per night are 45 percent more likely to have a stroke, according to a University of Cambridge study. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins