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:1/20/2017)... ... 2017 , ... Source Vitál Apothecary, a skin and body care company dedicated ... company had a successful visit to the 2017 ECRM Diet, Vitamin & Sports Nutrition ... in the nutritional, sports and health industries a chance to meet in private sessions ...
(Date:1/20/2017)... ... January 20, 2017 , ... Lice Troopers, the lice removal company ... with school-aged children since the holiday season. , “It happens every year around ... sharing hugs and taking photos, which is the head-to-head gateway that lice need to ...
(Date:1/20/2017)... ... 2017 , ... Michael and Betsy Brauser celebrated 5 years of Betsy’s participation ... trial has been life-saving as she has been on the trial for more ... diagnosed with ovarian cancer in 2009. She underwent standard chemotherapy but a year later ...
(Date:1/20/2017)... ... ... Magdalene: Grace is Greater than Sin”: a unique and memorable piece of literature ... Grace is Greater than Sin” is the creation of published author, Brenda Roberts, a ... had little knowledge of the female characters portrayed in the Holy Bible. , ...
(Date:1/20/2017)... ... ... examination of how God handles sin, including how to let go of lingering guilt and ... ten long years has been waiting to release this powerful insight about forgiveness that the ... the Lord for over twenty years, and he has been preaching and teaching the Word ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... NEW YORK , Jan. 19, 2017 /PRNewswire/ ... reach USD 233.7 billion by 2025, according to ... The market is anticipated to be predominantly driven ... companies, resulting into the large-scale production of new ... widen the influx of drugs at an unprecedented ...
(Date:1/19/2017)... Jan. 19, 2017 Report Details ... Alzheimer,s ... Leading Companies – our new study reveals trends, R&D ... and events affecting the Alzheimer,s disease therapeutics and diagnostics ... these key questions: - How is the Alzheimer,s disease ...
(Date:1/19/2017)... January 19, 2017 According to a study ... is set to witness a CAGR of 6.5% during the forecast ... will continue to be the leading market for cryotherapy globally ... ... emphasizing on ensuring affordable and adequate supply of gas in order ...
Breaking Medicine Technology: