Journal
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
Volume 49, Issue 11, Pages 4658-4673Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10803-019-04172-0
Keywords
Autism; EEG; Face inversion effect; Facial emotion processing; FPVS; Implicit fear detection
Categories
Funding
- Grants of the Research Foundation Flanders (FWO) [G0C7816N]
- Excellence of Science (EOS) Grants (HUMVISCAT) [G0E8718N]
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We objectively quantified the neural sensitivity of school-aged boys with and without autism spectrum disorder (ASD) to detect briefly presented fearful expressions by combining fast periodic visual stimulation with frequency-tagging electroencephalography. Images of neutral faces were presented at 6 Hz, periodically interleaved with fearful expressions at 1.2 Hz oddball rate. While both groups equally display the face inversion effect and mainly rely on information from the mouth to detect fearful expressions, boys with ASD generally show reduced neural responses to rapid changes in expression. At an individual level, fear discrimination responses predict clinical status with an 83% accuracy. This implicit and straightforward approach identifies subtle deficits that remain concealed in behavioral tasks, thereby opening new perspectives for clinical diagnosis.
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