HOME >> MEDICINE >> NEWS
Brain-imaging study sheds more light on underlying cause of attention-deficit hyperactivity syndrome

Results of a US study in this week's issue of THE LANCET provide details of the underlying physical causes of attention-deficit hyperactivity syndrome, with reductions in size of some brain areas and an increase in grey matter proportions being characteristic of children with the disorder.

Attention-deficit hyperactivity disorder (ADHD) is a serious neuropsychiatric problem in schoolchildren (an estimated 3-6% of US schoolchildren are affected, for example). The disorder is characterised by poor attention span, impulsivity, and high motor activity. Its nature and cause are poorly understood, although previous research has suggested that structural changes in areas of the brain controlling attention are responsible for the disorder.

Elizabeth R Sowell, Assistant Professor of Neurology from the Laboratory of Neuro Imaging at the University of California Los Angeles, USA, and colleagues undertook the first detailed morphological study using high-resolution magnetic resonance imaging (MRI) and sophisticated computational systems to more accurately determine the specific areas of the brain underlying ADHD. Brain assessment of 27 children (11 girls, 16 boys) and adolescents with ADHD was compared with that of 46 control children without ADHD who were matched for age and sex.

Abnormal brain structure was observed in the frontal cortices (on both sides of the brain) of children with ADHD, with reduced regional brain size localised mainly to small areas of the dorsal prefrontal cortices. Children with ADHD also had reduced brain size in anterior temporal areas, also on both sides of the brain. Substantial increases in grey matter were recorded in large portions of the posterior temporal and inferior parietal cortices in children with ADHD.

Elizabeth R Sowell comments: "Our morphometric procedures allow more precise localisation of group differences than do the methods used in previous studies. Our results therefore suggest that the disturban
'"/>

Contact: Joe Santangelo
j.santangelo@elsevier.com
212-633-3810
Lancet
20-Nov-2003


Page: 1 2

Related medicine news :

1. Brain-imaging cap under study for space and Earth use
2. Brain-imaging study offers clues to inhalant abuse
3. First head-to-head study to compare lidoderm patch and Celebrex in treating pain
4. UMaine study looks at infants and chronic nighttime crying
5. Chronic pain treatments more effective when taken together, new study shows
6. UNC study: Most N.C. family practitioners engage in unrecognized community service
7. New study in Nature demonstrates protection against cell death during heart attack
8. UCSF study offers insight into human circadian rhythms
9. International breast cancer prevention study launches in the United States and Canada
10. UW study shows blacks and Latinos are more satisfied with physicians of the same race
11. Physicians may not be accurate in their confidence levels of their diagnoses, says Pitt study

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/26/2017)... ... 26, 2017 , ... On May 24, the Congressional Budget Office (CBO) projected ... on May 4, would result in 23 million Americans losing their health insurance by ... Patient Protection and Affordable Care Act (ACA). , “It is clear from the ...
(Date:5/26/2017)... ... May 26, 2017 , ... Silver Birch of Hammond, a new assisted ... more than four acres of land at 5620 Sohl Avenue in Hammond, serves older ... building includes 125 studio and one-bedroom apartments. Each of the private apartments at Silver ...
(Date:5/26/2017)... ... May 26, 2017 , ... “When the Stars Lead ... is the creation of published author Laura Weigel Douglas, an avid reader who lives ... a house that sometimes feels like Green Hills Adventure Camp. She couldn’t be more ...
(Date:5/26/2017)... ... ... “Just What Happened in the Garden of Eden”: retells the stories of three Bible figures ... of published author, Penelope Colt, mother, trader, horse farmer, artist and a former GM journeyman. ... three. At six, they moved to Dayton, Ohio, where Penny graduated high school. ...
(Date:5/24/2017)... ... 2017 , ... Last month, representatives from Rendina Healthcare Real ... officials to celebrate the grand opening of the 87,000 square foot medical office/ICU ... its ongoing relationship with RWJBarnabas Health, New Jersey’s largest health system. Two years ...
Breaking Medicine News(10 mins):
(Date:5/8/2017)... Mich. , May 8, 2017  Diplomat Pharmacy, ... WRB Communications, Inc. ("WRB"), a health care service ... . WRB specializes in relationship management programs ... WRB will join ... Diplomat,s commercialization support services for manufacturers, biotech firms, and ...
(Date:5/6/2017)... N.Y. , May 5, 2017  Hill-Rom Holdings, ... will add approximately 100,000 square feet to its Welch ... September 2016 its commitment to bring more than 100 ... , where Welch Allyn has maintained a significant presence ... help accommodate these new positions, a large portion of ...
(Date:5/4/2017)... DIEGO , May 4, 2017 ... demonstrating its wireless, handheld ultrasound scanners this week ... Annual Scientific Meeting (ACOG) in San ... "Clarius is the perfect tool ... growth and heart rate, and evaluate pregnancy-related complications ...
Breaking Medicine Technology:
Cached News: