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Autism Problems Explained In New Research

Date:
October 26, 2005
Source:
Howard Florey Institute
Summary:
New research from Melbourne's Howard Florey Institute helps to explain why children with autism spectrum disorders (autism) have problem-solving difficulties. Using functional magnetic resonance imaging technology (fMRI) the Florey scientists have shown that children with autism have less activation in the deep parts of the brain responsible for executive function (attention, reasoning and problem solving).

New research from Melbourne's Howard Florey Institute helps to explain why children with autism spectrum disorders (autism) have problem-solving difficulties.

Using functional magnetic resonance imaging technology (fMRI) the Florey scientists have shown that children with autism have less activation in the deep parts of the brain responsible for executive function (attention, reasoning and problem solving).

Research leader Dr Ross Cunnington said autism was known to have a biological cause, but this neuroimaging research clearly showed the dysfunction in the brain that accounted for why children with autism have problems with their executive function.

“Discovering why children with autism have impaired executive function may help develop better therapies to improve their ability to pay attention and solve problems,” Dr Cunnington said.

“Specifically, we found that activity in the caudate nucleus, a critical part of circuits that link the prefrontal cortex of the brain, is reduced in boys with autism.”

“These findings have important implications, since prefrontal brain circuits play a critical role in maintaining and focusing attention, planning and setting goals, and keeping goals in memory during problem-solving and decision-making.”

“Our neuroimaging findings showing dysfunction in these prefrontal brain circuits now explain why children with autism have problems with learning and problem-solving,” he said.

Dr Cunnington along with PhD student, Tim Silk, have also been studying children with attention deficit hyperactivity disorder (ADHD) and have found similarities in the impairment of specific executive function in children with ADHD and autism.

The autism study was conducted with boys aged 11 to 18 years who had autism or Asperger’s disorder, as well teenage boys without the condition.

Autism affects one in 100 Australians and is lifelong condition that affects the way a person communicates and relates to other people. People affected by autism typically display major impairments in social interaction, communication and behaviour (restricted interests and repetitive behaviours).

The majority of people with autism also have an intellectual disability. Those with Asperger’s disorder are typically of average or above average intelligence and may have relatively good communication skills but specific learning difficulties.

The Florey scientists collaborated with scientists from Monash University, the Brain Research Institute and Texas Tech University in the USA. The results of this research are soon to be published in American Journal of Psychiatry.

The Howard Florey Institute is Australia’s leading brain research centre. Its scientists undertake clinical and applied research that can be developed into treatments to combat brain disorders, and new medical practices. Their discoveries will improve the lives of those directly, and indirectly, affected by brain and mind disorders in Australia, and around the world. The Florey’s research areas cover a variety of brain and mind disorders including Parkinson’s disease, stroke, motor neuron disease, addiction, epilepsy, multiple sclerosis, muscular dystrophy, autism and dementia.


Story Source:

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


Cite This Page:

Howard Florey Institute. "Autism Problems Explained In New Research." ScienceDaily. ScienceDaily, 26 October 2005. <www.sciencedaily.com/releases/2005/10/051025074915.htm>.
Howard Florey Institute. (2005, October 26). Autism Problems Explained In New Research. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2005/10/051025074915.htm
Howard Florey Institute. "Autism Problems Explained In New Research." ScienceDaily. www.sciencedaily.com/releases/2005/10/051025074915.htm (accessed September 2, 2014).

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