Featured Research

from universities, journals, and other organizations

Brain injuries may result in trouble sleeping, study finds

Date:
May 25, 2010
Source:
American Academy of Neurology
Summary:
People with brain injuries may produce low amounts of melatonin, which affects their sleep, according to a new study.

People with brain injuries may produce low amounts of melatonin, which affects their sleep, according to a study published in the May 25, 2010, print issue of Neurology®, the medical journal of the American Academy of Neurology.

Related Articles


For the study, 23 people who had a severe traumatic brain injury an average of 14 months earlier and 23 healthy people of the same age spent two nights in a sleep laboratory.

"We've known that people often have problems with sleep after a brain injury, but we haven't known much about the exact causes of these problems," said study author Shantha Rajaratnam, PhD, of Monash University in Victoria, Australia.

The healthy people produced more melatonin than the people with brain injuries in the evening hours, when melatonin levels are supposed to rise to signal sleep. Melatonin is a hormone that regulates biological rhythms, including sleep.

"These results suggest that the brain injury may disrupt the brain structures that regulate sleep, including the production of melatonin," Rajaratnam said. "Future studies should examine whether taking supplemental melatonin can improve sleep in people with brain injuries."

The people with brain injuries had other differences in their sleep patterns. They spent less of their time in bed actually asleep than the healthy participants did, or a "sleep efficiency" percentage of 82 compared to 90 for the healthy group. They also spent more time awake after initially falling asleep, or an average of 62 minutes per night compared to 27 minutes for the healthy group.

In addition, the people with brain injuries spent more time in non-REM sleep, in a stage of sleep called slow-wake sleep or deep sleep. Those with brain injuries spent an average of 24 percent of their time in slow-wake sleep, compared to 20 percent of the time for healthy participants.

Those with brain injuries also had more symptoms of anxiety and depression. However, the researchers calculated the results to control for the anxiety and depression symptoms and still found differences in sleep patterns.

The study was supported by the Australian National Health and Medical Research Council.


Story Source:

The above story is based on materials provided by American Academy of Neurology. Note: Materials may be edited for content and length.


Journal Reference:

  1. J.A. Shekleton, D.L. Parcell, J.R. Redman, J. Phipps-Nelson, J.L. Ponsford, and S.M.W. Rajaratnam. Sleep disturbance and melatonin levels following traumatic brain injury. Neurology, 2010; 74: 1732-1738 [link]

Cite This Page:

American Academy of Neurology. "Brain injuries may result in trouble sleeping, study finds." ScienceDaily. ScienceDaily, 25 May 2010. <www.sciencedaily.com/releases/2010/05/100524161236.htm>.
American Academy of Neurology. (2010, May 25). Brain injuries may result in trouble sleeping, study finds. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2010/05/100524161236.htm
American Academy of Neurology. "Brain injuries may result in trouble sleeping, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/05/100524161236.htm (accessed October 25, 2014).

Share This



More Health & Medicine News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Texas Nurse Nina Pham Cured of Ebola

Texas Nurse Nina Pham Cured of Ebola

AFP (Oct. 25, 2014) — An American nurse who contracted Ebola while caring for a Liberian patient in Texas has been declared free of the virus and will leave the hospital. Duration: 01:01 Video provided by AFP
Powered by NewsLook.com
Toxin-Packed Stem Cells Used To Kill Cancer

Toxin-Packed Stem Cells Used To Kill Cancer

Newsy (Oct. 25, 2014) — A Harvard University Research Team created genetically engineered stem cells that are able to kill cancer cells, while leaving other cells unharmed. Video provided by Newsy
Powered by NewsLook.com
IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) — IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) — A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
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