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:6/26/2017)... ... June 26, 2017 , ... LARKR™ , an innovative new smartphone app ... across the country to join its online treatment platform. , Launching in just ... a substantially greater number of people in need nationwide, and to supplement their traditional ...
(Date:6/26/2017)... ... June 26, 2017 , ... New patients with missing teeth ... with or without a referral. Dr. Cotey is a trusted dentist who has placed ... replacement option. , Patients with missing teeth in Fitchburg, WI, are encouraged to find ...
(Date:6/25/2017)... , ... June 25, 2017 , ... Republicans in the ... and replace Obamacare, called the Better Care Reconciliation Act. It differs significantly from the ... will need to be reconciled in committee, or the House will have to take ...
(Date:6/25/2017)... ... ... heatwave currently bearing down on Northern California pushing temperatures to the maximum, many people are ... with laser hair removal. , The process of summer waxing and constantly shaving unwanted ... want to do is get out, dive in and cool off. There is a way ...
(Date:6/24/2017)... ... June 24, 2017 , ... ... PA at the Sheraton Erie Bayfront and Erie Convention Center on June 8-10. ... experience, exhibits, a student quiz bowl, award and scholarship presentations, and professional networking. ...
Breaking Medicine News(10 mins):
(Date:5/30/2017)... CAESAREA, Israel , May 30, 2017 DarioHealth Corp. ... and big data solutions, today announced that it will be presenting ... 2017, at 8:00 AM PT. Erez Raphael , CEO, of ... The conference will be held on June 6th & 7th, ... 180 companies in the small / micro-cap space. ...
(Date:5/26/2017)... plc (NASDAQ: ENDP ) announced today that ... in a fireside chat at Goldman Sachs, 38 th ... 10:40 a.m. PT / 1:40 p.m. ET. The conference will ... Verdes, CA. A live webcast and ... Company,s website at http://www.endo.com/investors/overview . Participants should allow approximately ...
(Date:5/22/2017)... , May 22, 2017  Lilac Corp, ... Gene-Eden-VIR/Novirin, announces the launch of a new ... the results of a clinical study that showed ... treatment with Gene-Eden-VIR/Novirin in individuals suffering from HPV ... note that there are no other treatments that ...
Breaking Medicine Technology: