Featured Research

from universities, journals, and other organizations

Eyes don't necessarily give away sleepiness in people with disabilities, study suggests

Date:
October 10, 2012
Source:
Inderscience Publishers
Summary:
Visual examination of the pupils of the eyes is a standard test for alertness but to use pupil response in assessing sleepiness or exhaustion in people with physical disabilities requires a more sophisticated system, according to new research.

The speed and degree to which the pupil of the eye responds is a standard test for alertness. It has also been used to assess how sleepy or exhausted a person is. Now, research to be published in the International Journal of Bioinformatics Research and Applications suggests that measuring pupil response alone is not enough and that a person's rate of blinking should also be incorporated to obtain a more precise measure of alertness.

The work could be important in the care of people with multiple sclerosis and other conditions. It might also be automated and ultimately used to automatically monitor patients, drivers, pilots, machine operators or others.

Minoru Nakayama of the Tokyo Institute of Technology and colleagues at Aichi Medical University point out that how the pupil of the eye dilates and contracts can be a useful way to measure alertness, but tests have demonstrated that the precise response of the pupil does not correlate well with the actual degree of sleepiness before any other signs become apparent. They point out that blinking subtly affects pupil response and have now developed a new approach that combines pupillography with blinking assessment.

The approach could side-step subjective assessment by healthcare workers in clinical situations. Moreover, it could be developed into an early-warning system to reduce workplace, road and other accidents by alerting operators and drivers to their level of alertness before sleepiness impinges on their behavior.

The team has successfully tested their approach with two groups of volunteers -- sleepy and not sleepy as assessed by conventional sleepiness tests, including the Stanford Sleepiness Score and the Epworth Sleepiness Scale. The results allowed the team to produce a formula that links blink, pupillary indices and subjective sleepiness.


Story Source:

The above story is based on materials provided by Inderscience Publishers. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nakayama et al. Estimation of sleepiness using pupillary response and its frequency components. Int. J. Bioinformatics Research and Applications, 2012, 8, 342-365

Cite This Page:

Inderscience Publishers. "Eyes don't necessarily give away sleepiness in people with disabilities, study suggests." ScienceDaily. ScienceDaily, 10 October 2012. <www.sciencedaily.com/releases/2012/10/121010102156.htm>.
Inderscience Publishers. (2012, October 10). Eyes don't necessarily give away sleepiness in people with disabilities, study suggests. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2012/10/121010102156.htm
Inderscience Publishers. "Eyes don't necessarily give away sleepiness in people with disabilities, study suggests." ScienceDaily. www.sciencedaily.com/releases/2012/10/121010102156.htm (accessed October 20, 2014).

Share This



More Health & Medicine News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Nigeria Beat Its Ebola Outbreak

How Nigeria Beat Its Ebola Outbreak

Newsy (Oct. 20, 2014) The World Health Organization has declared Nigeria free of Ebola. Health experts credit a bit of luck and the government's initial response. Video provided by Newsy
Powered by NewsLook.com
Another Study Suggests Viagra Is Good For The Heart

Another Study Suggests Viagra Is Good For The Heart

Newsy (Oct. 20, 2014) An ingredient in erectile-dysfunction medications such as Viagra could improve heart function. Perhaps not surprising, given Viagra's history. Video provided by Newsy
Powered by NewsLook.com
Ebola Worries End for Dozens on U.S. Watch Lists

Ebola Worries End for Dozens on U.S. Watch Lists

Reuters - US Online Video (Oct. 20, 2014) Forty-three people who had contact with Thomas Eric Duncan, the first person diagnosed with Ebola in the U.S., were cleared overnight of twice-daily monitoring after 21 days of showing no symptoms. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Fauci: Ebola Protocols to Focus on Training

Fauci: Ebola Protocols to Focus on Training

AP (Oct. 20, 2014) Dr. Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases, says he expects revised CDC protocols on Ebola to focus on training, observation and ensuring health care workers are more protected. (Oct. 20) Video provided by AP
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