Navigation Links
Electrical Signal in Brain Seems to Warn of 'Mistakes'
Date:3/23/2009

Finding may help in kids with ADHD, workers under stress,,

MONDAY, March 23 (HealthDay News) -- A distinct electric signature in the brain indicates when someone is about to make a mistake, say researchers who scanned the brain waves of volunteers as they worked on attention-demanding tasks.

The American and Dutch researchers said their findings could have a wide range of applications, such as developing new ways to help children cope with attention-deficit/hyperactivity disorder (ADHD) or creating monitoring devices that alert air traffic controllers when their attention is wavering.

The study included 14 university students who did a test called the "sustained attention response task," which is used to evaluate brain damage, ADHD and other neurological disorders. Participants watched a computer screen for an hour as a random number from one to nine flashed on the screen every two seconds. Participants tapped a button as soon as any number except five appeared on the screen.

Due to the monotony of the test, participants hit the button about 40 percent of the time when they saw the number five, said Ali Mazaheri, a research fellow at the Center for Mind and Brain at the University of California, Davis.

As the participants did the test, their brain wave activity was recorded using magnetoencephalography, which is more sensitive than the electroencephalography, or EEG, commonly used in hospitals to detect seizures. The results showed that brain waves in two regions of the brain -- the occipital region and the sensorimotor cortex -- were about 25 percent stronger about a second before participants made an error.

The increases involved alpha waves in the occipital region, located in the back of the brain, and mu waves in the sensorimotor cortex, located in the middle of the brain.

In addition, the researchers found that errors triggered changes in wave activity in the front region of the brain, which seemed to reduce alpha wave activity in the occipital region.

"It looks like the brain is saying, 'Pay attention!' and then reducing the likelihood of another mistake," Mazaheri said in a news release from the university.

The findings, published online March 23 in the journal Human Brain Mapping, could someday benefit children with ADHD.

"Instead of watching behavior -- which is an imprecise measure of attention -- we can monitor these alpha waves, which tell us that attention is waning," Mazaheri said. "And that can help us design therapies as well as evaluate the efficacy of various treatments, whether it's training or drugs."

More information

The U.S. National Institute of Mental Health has more about ADHD.



-- Robert Preidt



SOURCE: University of California, Davis, news release, March 23, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Holiday Electrical Safety Tips for Children
2. Innovative Self Locking Threaded Fasteners Provide New Electrical Design Options
3. M.C. Dean, Inc. Awarded Contract for Electrical Services at Atlanta VA Medical Center
4. Rhode Island Hospital first in US to treat kidney tumor with new device using electrical pulses
5. Engineer: Computer learning, electrical stimulation offer hope for paralyzed
6. Signalife to Deploy Fidelity 100 Heart Monitors for AFL
7. Knee Pain May Signal Lung Cancer
8. Emory researchers identify signaling protein for multiple myeloma
9. Falling Platelet Counts May Signal HIV-Linked Dementia
10. Brown researchers make major signal transduction discovery
11. Cooper Clinic at Craig Ranch Opens Signaling the Next Phase of CooperLife Health-Focused Residential Community in McKinney
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Electrical Signal in Brain Seems to Warn of  'Mistakes'
(Date:8/16/2017)... ... August 16, 2017 , ... Paul Vitenas, MD, FACS , ... Top Doctor. The annual list identifies the nation’s top physicians, in a variety of ... it to the top of Castle Connolly’s coveted ranking. , Castle Connolly is the ...
(Date:8/16/2017)... ... August 16, 2017 , ... SGNA Standards of Infection ... reprocessing cycle, both between patient procedures and before storage, is a requisite practice ... important to the prevention of disease transmission and nosocomial infection as cleaning and ...
(Date:8/16/2017)... ... 16, 2017 , ... Richard Strawn’s new book Surgical ... of a cancer diagnosis, surgery and recovery, the Psalms provided encouragement and hope, ... God shows love to those who are sick., Surgical Psalms contains 36 reflections ...
(Date:8/16/2017)... ... August 16, 2017 , ... ... an opportunity for men and women to train as hospice volunteers. Volunteers provide ... life-limiting illness. For over 30 years, the agency has trained volunteers to be ...
(Date:8/16/2017)... ... August 16, 2017 , ... ... and marketers of high-quality anti-aging skincare solutions, recently announced the launch of two ... are an affordable, yet effective alternative to expensive plastic surgery or in-patient cosmetic ...
Breaking Medicine News(10 mins):
(Date:8/1/2017)... , Aug. 1, 2017   CerSci Therapeutics , ... Dallas, Texas , has received notice from the ... Institutes of Health (NIH) that it has been awarded ... totaling over $650,000 in 2017 with an additional $1,000,000 ... Investigational New Drug application of their lead non-opioid drug ...
(Date:7/31/2017)... MEMPHIS, Tenn. , July 31, 2017 Three Tru-D ... in Yongsan, South Korea . Tru-D, short for "Total ... patient and operating rooms after an environmental services (ES) professional cleans the ... ... "Although ...
(Date:7/28/2017)... Holdings, Inc. ("Hill-Rom") (NYSE: HRC), today announced financial results ... and updated its financial outlook for fiscal 2017. ... third quarter, Hill-Rom reported earnings of $0.09 per diluted ... prior-year period. These results reflect after-tax special items, including ... to the non-cash write-down of assets associated with the ...
Breaking Medicine Technology: