Navigation Links
New research explains autistic's exceptional visual abilities

This release is available in French.

Researchers directed by Dr. Laurent Mottron at the University of Montreal's Centre for Excellence in Pervasive Development Disorders (CETEDUM) have determined that people with autism concentrate more brain resources in the areas associated with visual detection and identification, and conversely, have less activity in the areas used to plan and control thoughts and actions. This might explain their outstanding capacities in visual tasks. The team published their findings in Human Brain Mapping on April 4, 2011.

Aiming to understand why autistic individuals have strong abilities in terms of processing visual information, the researchers collated 15 years of data that covered the ways autistic brain works when interpreting faces, objects and written words. The data came from 26 independent brain imaging studies that looked at a total of 357 autistic and 370 non-autistic individuals. "Through this meta-analysis, we were able to observe that autistics exhibit more activity in the temporal and occipital regions and less activity in frontal cortex than non-autistics. The identified temporal and occipital regions are typically involved in perceiving and recognizing patterns and objects. The reported frontal areas subserve higher cognitive functions such as decision making, cognitive control, planning and execution,'' explained first author Fabienne Samson, who is also affiliated with the CETEDUM.

"This stronger engagement of the visual processing brain areas in autism is consistent with the well documented enhanced visuo-spatial abilities in this population," Samson said. The current findings suggest a general functional reorganization of the brain in favor of perception processes the processes by which information is recorded the brain. This allows autistic individuals to successfully perform, albeit in their own way, higher-level cognitive tasks that would usually require a strong involvement of frontal areas in typical individuals. These are tasks that require reasoning for example, a research participant would be asked if a statement is true or false, or to categorize a range of objects into groups.

"We synthesized the results of neuroimaging studies using visual stimuli from across the world. The results are strong enough to remain true despite the variability between the research designs, samples and tasks, making the perceptual account of autistic cognition currently the most validated model," Mottron said. "The stronger engagement of the visual system, whatever the task, represents the first physiological confirmation that enhanced perceptual processing is a core feature of neural organization in this population. We now have a very strong statement about autism functioning which may be ground for cognitive accounts of autistic perception, learning, memory and reasoning." This finding shows that the autistic brain successfully adapt by reallocating brain areas to visual perception, and offers many new lines of enquiry with regards to developmental brain plasticity and visual expertise in autistics.


Contact: William Raillant-Clark
University of Montreal

Related biology news :

1. Wistar Institute researcher receives New Innovator award from NIH
2. NC State researchers get to root of parasite genome
3. White Mountain Research Station to host climate change conference
4. Stevens awarded $1M for advanced biofuels research
5. Researchers find animal with ability to survive climate change
6. Researchers find an essential gene for forming ears of corn
7. Researchers note differences between people and animals on calorie restriction
8. Researcher working on destruction of chemical weapons
9. Researchers study acoustic communication in deep-sea fish
10. Researchers discover that growing up too fast may mean dying young in honey bees
11. The Rett Syndrome Research Trust launches operations
Post Your Comments:
Related Image:
New research explains autistic's exceptional visual abilities
(Date:10/4/2017)... 4, 2017  GCE Solutions, a global clinical research organization (CRO), ... anonymization solution on October 4, 2017. Shadow is designed to assist ... with policy 0070 of the European Medicines Agency (EMA) in meeting ... ... ...
(Date:6/23/2017)... ITHACA, N.Y. , June 23, 2017 ... a leader in dairy research, today announced a new ... help reduce the chances that the global milk supply ... this dairy project, Cornell University has become the newest ... Food Supply Chain, a food safety initiative that includes ...
(Date:5/6/2017)... SINGAPORE , May 5, 2017 ... has just announced a new breakthrough in biometric ... that exploits quantum mechanical properties to perform ... new smart semiconductor material created by Ram Group ... across finance, entertainment, transportation, supply chains and security. ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... analysis platform specifically designed for life science researchers to analyze and interpret ... Rosalind Franklin, who made a major contribution to the discovery of the ...
(Date:10/11/2017)... ... October 11, 2017 , ... The ... endogenous context, enabling overexpression experiments and avoiding the use of exogenous expression plasmids. ... is transformative for performing systematic gain-of-function studies. , This complement to loss-of-function ...
(Date:10/11/2017)... ... 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for its 4th ... in San Francisco, CA. The Summit brings together current and former FDA office bearers, ... and government officials from around the world to address key issues in device compliance, ...
(Date:10/11/2017)... 11, 2017  VMS BioMarketing, a leading provider of patient ... Clinical Nurse Educator (CNE) network, which will launch this week. ... among health care professionals to enhance the patient care experience ... and other health care professionals to help women who have ... ...
Breaking Biology Technology: