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Impaired inhibitory control when processing real but not cartoon emotional faces in autistic children: Evidence from an event‐related potential study

Hyun Kyung Lee,Shelley Xiuli Tong

Published 2024 in Autism Research

ABSTRACT

Impaired socioemotional functioning characterizes autistic children, but does weak inhibition control underlie their socioemotional difficulty? This study addressed this question by examining whether and, if so, how inhibition control is affected by face realism and emotional valence in school‐age autistic and neurotypical children. Fifty‐two autistic and 52 age‐matched neurotypical controls aged 10–12 years completed real and cartoon emotional face Go/Nogo tasks while event‐related potentials (ERPs) were recorded. The analyses of inhibition–emotion components (i.e., N2, P3, and LPP) and a face‐specific N170 revealed that autistic children elicited greater N2 while inhibiting Nogo trials and greater P3/LPP and late LPP for real but not cartoon emotional faces. Moreover, autistic children exhibited a reduced N170 to real face emotions only. Furthermore, correlation results showed that better behavioral inhibition and emotion recognition in autistic children were associated with a reduced N170. These findings suggest that neural mechanisms of inhibitory control in autistic children are less efficient and more disrupted during real face processing, which may affect their age‐appropriate socio‐emotional development.

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