{"doi":"10.1007/s00787-022-02068-6","title":"Aberrant brain dynamics and spectral power in children with ADHD and its subtypes","abstract":"<jats:title>Abstract</jats:title><jats:p>Attention-deficit/hyperactivity disorder (ADHD) is a prevalent neurodevelopmental disorder in children, usually categorized as three subtypes, predominant inattention (ADHD-I), predominant hyperactivity-impulsivity (ADHD-HI), and a combined subtype (ADHD-C). Yet, common and unique abnormalities of electroencephalogram (EEG) across different subtypes remain poorly understood. Here, we leveraged microstate characteristics and power features to investigate temporal and frequency abnormalities in ADHD and its subtypes using high-density EEG on 161 participants (54 ADHD-Is and 53 ADHD-Cs and 54 healthy controls). Four EEG microstates were identified. The coverage of salience network (state C) were decreased in ADHD compared to HC (<jats:italic>p</jats:italic> = 1.46e-3), while the duration and contribution of frontal–parietal network (state D) were increased (<jats:italic>p</jats:italic> = 1.57e-3; <jats:italic>p</jats:italic> = 1.26e-4). Frequency power analysis also indicated that higher delta power in the fronto-central area (<jats:italic>p</jats:italic> = 6.75e-4) and higher power of theta/beta ratio in the bilateral fronto-temporal area (<jats:italic>p</jats:italic> = 3.05e-3) were observed in ADHD. By contrast, remarkable subtype differences were found primarily on the visual network (state B), of which ADHD-C have higher occurrence and coverage than ADHD-I (<jats:italic>p</jats:italic> = 9.35e-5; <jats:italic>p</jats:italic> = 1.51e-8), suggesting that children with ADHD-C might exhibit impulsivity of opening their eyes in an eye-closed experiment, leading to hyper-activated visual network. Moreover, the top discriminative features selected from support vector machine model with recursive feature elimination (SVM-RFE) well replicated the above results, which achieved an accuracy of 72.7% and 73.8% separately in classifying ADHD and two subtypes. To conclude, this study highlights EEG microstate dynamics and frequency features may serve as sensitive measurements to detect the subtle differences in ADHD and its subtypes, providing a new window for better diagnosis of ADHD.</jats:p>","journal":"European Child &amp; Adolescent Psychiatry","year":2023,"id":639599,"datarank":1.6913488418571216,"base_score":3.9318256327243257,"endowment":3.9318256327243257,"self_citation_contribution":0.5897738449086489,"citation_network_contribution":1.1015749969484727,"self_endowment_contribution":0.5897738449086489,"citer_contribution":1.1015749969484727,"corpus_percentile":null,"corpus_rank":null,"citation_count":50,"citer_count":47,"citers_with_citation_signal":33,"citers_with_endowment":33,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1661856,"name":"Xiangsheng Luo","orcid":null,"position":1,"is_corresponding":false},{"id":1661857,"name":"Suli Zheng","orcid":null,"position":2,"is_corresponding":false},{"id":322954,"name":"Dongren Yao","orcid":"0000-0002-9922-1756","position":3,"is_corresponding":false},{"id":455263,"name":"Min Zhao","orcid":"0000-0002-4551-043X","position":4,"is_corresponding":false},{"id":1480262,"name":"Yue Cui","orcid":"0000-0002-7304-9409","position":5,"is_corresponding":false},{"id":1077113,"name":"Yu Zhu","orcid":"0000-0002-4745-2165","position":6,"is_corresponding":false},{"id":227761,"name":"Vince D. Calhoun","orcid":"0000-0001-9058-0747","position":7,"is_corresponding":false},{"id":310604,"name":"Li Sun","orcid":"0000-0001-8228-7487","position":8,"is_corresponding":false},{"id":227750,"name":"Jing Sui （Beijing Normal University）， my correct affiliation is beijing normal university, not Qingdao University of Science and Technology, please correct the current affiliation. Thank you","orcid":"0000-0001-6837-5966","position":9,"is_corresponding":false},{"id":278865,"name":"Na Luo","orcid":"0000-0003-4411-773X","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Aberrant brain dynamics and spectral power in children with ADHD and its subtypes","abstract":"<jats:title>Abstract</jats:title><jats:p>Attention-deficit/hyperactivity disorder (ADHD) is a prevalent neurodevelopmental disorder in children, usually categorized as three subtypes, predominant inattention (ADHD-I), predominant hyperactivity-impulsivity (ADHD-HI), and a combined subtype (ADHD-C). Yet, common and unique abnormalities of electroencephalogram (EEG) across different subtypes remain poorly understood. Here, we leveraged microstate characteristics and power features to investigate temporal and frequency abnormalities in ADHD and its subtypes using high-density EEG on 161 participants (54 ADHD-Is and 53 ADHD-Cs and 54 healthy controls). Four EEG microstates were identified. The coverage of salience network (state C) were decreased in ADHD compared to HC (<jats:italic>p</jats:italic> = 1.46e-3), while the duration and contribution of frontal–parietal network (state D) were increased (<jats:italic>p</jats:italic> = 1.57e-3; <jats:italic>p</jats:italic> = 1.26e-4). Frequency power analysis also indicated that higher delta power in the fronto-central area (<jats:italic>p</jats:italic> = 6.75e-4) and higher power of theta/beta ratio in the bilateral fronto-temporal area (<jats:italic>p</jats:italic> = 3.05e-3) were observed in ADHD. By contrast, remarkable subtype differences were found primarily on the visual network (state B), of which ADHD-C have higher occurrence and coverage than ADHD-I (<jats:italic>p</jats:italic> = 9.35e-5; <jats:italic>p</jats:italic> = 1.51e-8), suggesting that children with ADHD-C might exhibit impulsivity of opening their eyes in an eye-closed experiment, leading to hyper-activated visual network. Moreover, the top discriminative features selected from support vector machine model with recursive feature elimination (SVM-RFE) well replicated the above results, which achieved an accuracy of 72.7% and 73.8% separately in classifying ADHD and two subtypes. 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