Disturbed interplay between mid- and high-level vision in ASD? Evidence from a contour identification task with...

Area of Science:

• Neuroscience
• Developmental Psychology
• Autism Spectrum Disorder Research

Background:

• Autism spectrum disorder (ASD) is characterized by atypical visual processing.
• Previous research suggests deficits may not be isolated to global or local processing alone.

Purpose of the Study:

• To investigate the interaction between visual processing components in children with and without ASD.
• To examine how age influences visual processing in ASD.

Main Methods:

• Developed a novel identification task using Gaborized object outlines.
• Applied the paradigm to two age groups (6-10 and 10-14 years) of children with and without ASD.
• Utilized event history analyses to assess identification performance over time.

Main Results:

• Children with ASD exhibited a consistent identification disadvantage compared to typically developing children.
• The performance gap widened as contour complexity increased, favoring typically developing children.
• The ASD group's disadvantage remained stable throughout the temporal unfolding of visual stimuli.

Conclusions:

• The interplay between local and global visual processing is disrupted in autism spectrum disorder.
• Both bottom-up and top-down processing interactions appear to be affected in children with ASD.
• Findings highlight the complexity of visual processing deficits in ASD beyond isolated components.