People with Autism Spectrum Disorder (ASD) often show atypical peripheral vision processing compared to neurotypical individuals. Research indicates enhanced cortical responses to peripheral stimuli in ASD, alongside potential deficits in sensitivity or detection.
## Enhanced Processing
Studies using visual evoked potentials found greater early brain responses to peripheral visual inputs in children with ASD, suggesting altered visuo-spatial mapping. This enhancement correlates with stereotyped behaviors and may stem from atypical eye movements or fixation patterns.
## Detection Challenges
Individuals with ASD detect fewer brief peripheral light flashes, especially in the nasal hemifield, indicating reduced sensitivity. They also take longer to identify peripheral stimuli and perform worse on such tasks than typically developing peers.
## Sensory Sensitivities
Heightened sensitivity to peripheral motion or changes can overwhelm some with ASD, while others struggle to notice peripheral cues. Coordination between central and peripheral vision may be impaired, affecting eye tracking.
## Practical Impacts
These differences contribute to behaviors like side glances or avoidance of direct gaze, as peripheral vision feels less overwhelming. Functional vision issues, including reduced peripheral field, are linked to ASD.
