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09:03
Eye Tracking Young Children with Autism
Published on: March 27, 2012
Deeper attentional masking by lateral objects in children with autism
Luca Ronconi1, Simone Gori, Enrico Giora
1Developmental and Cognitive Neuroscience Lab, Department of General Psychology, University of Padova, Italy.
Brain and Cognition
|May 21, 2013
Summary
Children with autism spectrum disorder (ASD) show inefficient visual attention when a masking object appears nearby in space and time. This suggests altered spatio-temporal processing in ASD visual perception.
Area of Science:
- Neuroscience
- Developmental Psychology
- Visual Perception
Background:
- Autism spectrum disorder (ASD) is linked to detail-oriented perception and overselective visual attention.
- Previous research focused on spatial properties, leaving spatio-temporal visual processing in ASD understudied.
Purpose of the Study:
- To investigate the spatio-temporal dynamics of visual processing in children with ASD.
- To compare attentional masking (AM) effects between children with ASD and typically developing (TD) controls.
Main Methods:
- Utilized an attentional masking (AM) paradigm with children diagnosed with ASD and IQ-matched TD controls.
- Assessed the AM effect, defined as impaired target identification due to a subsequent masking object at varying spatial and temporal distances.
Main Results:
- No significant difference in AM effect when the masking object was in the same position as the target.
- Children with ASD exhibited significantly greater and more prolonged interference when the masking object was laterally positioned compared to TD controls.
Conclusions:
- Inefficient attentional selection in ASD is influenced by spatio-temporal interactions between visual objects.
- Findings support the ASD altered neural connectivity hypothesis and the reentrant theory of perception.
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