4.6 Article

Identification of diagnostic markers for ASD: a restrictive interest analysis based on EEG combined with eye tracking

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FRONTIERS IN NEUROSCIENCE
卷 17, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fnins.2023.1236637

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EEG; functional connectivity; eye tracking; ASD biomarker; ASD early diagnosis

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Electroencephalography (EEG) functional connectivity (EFC) and eye tracking (ET) were evaluated as objective screening methods for early diagnosis of autism spectrum disorder (ASD). The study found that ASD children exhibited higher alpha band connectivity in the EEG and longer total fixation time in the ET under high restrictive interest stimuli. These biomarkers were significantly correlated with ADOS scores and restricted and repetitive behaviors (RRBs). Network-based machine learning prediction showed a 63.4% accuracy in identifying ASD.
Electroencephalography (EEG) functional connectivity (EFC) and eye tracking (ET) have been explored as objective screening methods for autism spectrum disorder (ASD), but no study has yet evaluated restricted and repetitive behavior (RRBs) simultaneously to infer early ASD diagnosis. Typically developing (TD) children (n = 27) and ASD (n = 32), age- and sex-matched, were evaluated with EFC and ET simultaneously, using the restricted interest stimulus paradigm. Network-based machine learning prediction (NBS-predict) was used to identify ASD. Correlations between EFC, ET, and Autism Diagnostic Observation Schedule-Second Edition (ADOS-2) were performed. The Area Under the Curve (AUC) of receiver-operating characteristics (ROC) was measured to evaluate the predictive performance. Under high restrictive interest stimuli (HRIS), ASD children have significantly higher alpha band connectivity and significantly more total fixation time (TFT)/pupil enlargement of ET relative to TD children (p = 0.04299). These biomarkers were not only significantly positively correlated with each other (R = 0.716, p = 8.26e-4), but also with ADOS total scores (R = 0.749, p = 34e-4) and RRBs sub-score (R = 0.770, p = 1.87e-4) for EFC (R = 0.641, p = 0.0148) for TFT. The accuracy of NBS-predict in identifying ASD was 63.4%. ROC curve demonstrated TFT with 91 and 90% sensitivity, and 78.7% and 77.4% specificity for ADOS total and RRB sub-scores, respectively. Simultaneous EFC and ET evaluation in ASD is highly correlated with RRB symptoms measured by ADOS-2. NBS-predict of EFC offered a direct prediction of ASD. The use of both EFC and ET improve early ASD diagnosis.

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