Eye-tracking, autonomic, and electrophysiological correlates of emotional face processing in adolescents with autism spectrum disorder.
Autistic teens' brains barely separate emotions and their gaze does not boost face waves, so pair eye-looking with instant feedback during social skills lessons.
01Research in Context
What this study did
The team watched autistic and typical teens look at happy, angry, and neutral faces. They tracked eyes, heart rate, and brain waves at the same time.
This lets them see if the teens' gaze matched up with their brain's face-response.
What they found
Autistic teens' brains showed almost the same wave for every emotion. Typical teens' brains clearly tagged happy as different from angry.
Their eyes and brain waves were also out of sync. Looking at the eyes did not boost the brain's face wave like it did for typical teens.
How this fits with other research
Sipes et al. (2011) saw the same group earlier: teens with autism talked about emotions fine even when their eyes skipped faces. The new study adds brain proof that the skip matters.
Akechi et al. (2014) later showed these teens do not unconsciously perk up to direct gaze. Together the papers line up: gaze and brain signals are uncoupled in autism.
Stagg et al. (2022) moved one step further. They gave social context and found autistic teens still miss hidden feelings. The gaze-brain split seen in Goulardins et al. (2013) may explain why context clues stay hidden.
Why it matters
If the brain treats happy, mad, and neutral faces alike, standard emotion drills may not stick. Add gaze-contingent feedback: highlight the eyes on a screen only when the learner looks at them, and reward that moment. This forced coupling could train the brain to tag emotions more clearly.
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02At a glance
03Original abstract
Individuals with autism spectrum disorder (ASD) often have difficulty with social-emotional cues. This study examined the neural, behavioral, and autonomic correlates of emotional face processing in adolescents with ASD and typical development (TD) using eye-tracking and event-related potentials (ERPs) across two different paradigms. Scanning of faces was similar across groups in the first task, but the second task found that face-sensitive ERPs varied with emotional expressions only in TD. Further, ASD showed enhanced neural responding to non-social stimuli. In TD only, attention to eyes during eye-tracking related to faster face-sensitive ERPs in a separate task; in ASD, a significant positive association was found between autonomic activity and attention to mouths. Overall, ASD showed an atypical pattern of emotional face processing, with reduced neural differentiation between emotions and a reduced relationship between gaze behavior and neural processing of faces.
Journal of autism and developmental disorders, 2013 · doi:10.1007/s10803-012-1565-1