Navigation Links
Brain regions do not communicate efficiently in adults with autism

A novel look at the brains of adults with autism has provided new evidence that various brain regions of people with the developmental disorder may not communicate with each other as efficiently as they do in other people.

Researchers from the University of Washington's Autism Center will report today at the annual meeting of the Society for Neuroscience on the first study that measures neural activity by using high-resolution electroencephalography (EEG) to examine connections in the cerebral cortex, the part of the brain that deals with higher cognitive processes.

Compared to normally developing individuals, the scientists found patterns of abnormal connectivity between brain regions in people with autism. These abnormalities showed both over and under connectivity between neurons in different parts of the cortex, according to Michael Murias, a postdoctoral researcher who headed the study.

"Our findings indicate adults with autism show differences in coordinated neural activity," said Murias, "which implies poor internal communication between the parts of the brain."

The UW researchers analyzed EEGs from 36 adults, ranging in age from 19 to 38. Half the adults had autism and all had IQs of at least 80. The EEGs, which measure the activity of hundreds of millions of brain cells, were collected with an array of 124 electrodes while the people were seated and relaxed with their eyes closed for two minutes.

The researchers found patterns of higher than normal neural connectivity in the left hemisphere, particularly in the temporal lobe of the persons with autism within two different frequencies of brain waves, the delta and theta bands. This part of the brain is associated with language, which is impaired in many people with autism.

A global pattern of decreased neural connectivity between the frontal lobes and the rest of autistic brain showed up on the alpha wave band. These findings support s everal other studies using functional magnetic resonance imaging and positron emission tomography, both of which gauge brain activity by measuring blood flow. Post-mortem studies also suggest impairments in communication at the level of individual brain cells.

This over and under abundance of neural connections suggests inefficient and inconsistent communication inside the brains of people with autism and may explain some of the deficits shown by people who have the disorder.

The research has practical applications. Murias believes the abnormal patterns of brain activity are a potential biological marker of autism and may help to define the phenotype, or major characteristics, of autism. UW colleagues think EEG techniques can be used on young children to help in the early detection of autism, which is critical in providing interventions for the disorder. Other members of the research team are from the UW's Autism Center and include Geraldine Dawson, center director and a professor of psychology; Sara Webb, assistant professor of psychiatry and behavioral sciences; Jessica Greenson, research scientist; and Kristen Merkle, research study assistant. The National Institute of Mental Health's Studies to Advance Autism Research and Treatment and the Perry Research Fellowship Endowment funded the research.

Autism, a spectrum of developmental disorders, is the most common developmental disorder in the United States. It is estimated to affect one in every 166 children. Autism is characterized by an inability to communicate and interact with other people, and those afflicted typically have a restricted range of activities and interests


'"/>

Source:University of Washington


Related biology news :

1. Drug That Tags Decision-making Areas Of The Brain May Aid
2. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
3. Transport System Smuggles Medicines Into Brain
4. Bird Brains Show How Trial and Error May Contribute to Learning
5. VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain
6. Wiley announces publication of Databasing the Brain
7. Scientists Propose Sweeping Changes to Naming of Bird Neurosystems to Acknowledge Their True Brainpower
8. Brain-mapping technique aids understanding of sleep, wakefulness
9. Some Brain Cells Change Channels To Fine-tune The Message
10. Brain Scans Reveal How Gene May Boost Schizophrenia Risk
11. Brain-injury rehabilitation depends on acetylcholine circuitry
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/24/2017)... DUBLIN , Mar 24, 2017 Research ... Vehicle Access System Market Analysis & Trends - Industry Forecast to ... ... poised to grow at a CAGR of around 15.1% over the ... This industry report analyzes the market estimates and forecasts for ...
(Date:3/22/2017)... 21, 2017   Neurotechnology , a provider ... today announced the release of the SentiVeillance ... improved facial recognition using up to 10 surveillance, ... computer. The new version uses deep neural-network-based facial ... it utilizes a Graphing Processing Unit (GPU) for ...
(Date:3/20/2017)... March 20, 2017 At this year,s CeBIT Chancellor ... biometrics manufacturer DERMALOG. The Chancellor came to the DERMALOG stand together with ... this year,s CeBIT partner country. At the largest German biometrics company the ... fingerprint, face and iris recognition as well as DERMALOG´s multi-biometrics system.   ... ...
Breaking Biology News(10 mins):
(Date:7/26/2017)... ... 2017 , ... Cambridge Semantics , the leading provider ... Data Lake® (Anzo SDL) product won ‘Best Text Analytics and Semantic Technology ... , Cambridge Semantics’ Anzo SDL uses Knowledge Graphs based on semantic graph models ...
(Date:7/26/2017)... ... 25, 2017 , ... In this webinar , which ... considerations needed for designing ideal guide RNAs and DNA oligo or plasmid repair ... double-strand breaks in genomic DNA has greatly simplified strategies for precise gene editing ...
(Date:7/26/2017)... (PRWEB) , ... July 26, 2017 , ... ... leading company for the improvement of crop productivity and economics for the food, ... collaboration. The scope of the agreement includes the research and development of microbiome-based ...
(Date:7/24/2017)... ... , ... Charm Sciences, Inc. is pleased to announce the Charm® ROSA® Tetracycline-SL ... Shipments (NCIMS) Laboratory Committee and Appendix N Committee as a drug residue test kit ... NCIMS voted at its annual meeting in April, 2015 to establish a pilot program ...
Breaking Biology Technology: