Abstract
There is an increasing interest in non-pharmacological treatments for children with attention-deficit/hyperactivity disorder (AD/HD), especially digital techniques that can be remotely delivered, such as neurofeedback (NFT) and computerized cognitive training (CCT). In this study, a randomized controlled design was used to compare training outcomes between remotely delivered NFT, CCT, and combined NFT/CCT training approaches. A total of 121 children with AD/HD were randomly assigned to the NFT, CCT, or NFT/CCT training groups, with 80 children completing the training program. Pre- and post-training symptoms (primary outcome), executive and daily functions were measured using questionnaires as well as resting EEG during eyes-closed (EC) and eyes-open (EO) conditions. After 3 months of training, the inattentive and hyperactive/impulsive symptoms, inhibition, working memory, learning and life skills of the three groups of children were significantly improved. The objective EEG activity showed a consistent increase in the relative alpha power in the EO condition among the three training groups. Training differences were not observed between groups. There was a positive correlation between pre-training EO relative alpha power and symptom improvement scores of inattention and hyperactivity/impulsivity, as well as a negative correlation between pre-training inattention scores and change in EO relative alpha. This study verified the training effects of NFT, CCT, and combined NFT/CCT training in children with AD/HD and revealed an objective therapeutic role for individual relative alpha activity. The verified feasibility and effectiveness of home-based digital training support promotion and application of digital remote training.




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Acknowledgements
This work was supported by the National Natural Sciences Foundation of China (L.S., 81771479, 81971284); the Beijing Municipal Science and Technology Program (L.S., Z171100001017089), the Key scientific research projects of capital health development (L.S., 2020-1-4111). The authors wish to thank the children and their parents for participating.
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XL contributed to investigation, data curation, formal analysis, writing (original draft), and writing (review and editing); XG contributed to investigation, supervision, data acquisition and follow, formal analysis, writing (original draft); QZ contributed to investigation, data acquisition and follow, and writing (review and editing); YZ contributed to investigation, data acquisition, supervision, and writing (review and editing); YC contributed to investigation, data acquisition, supervision and writing (review and editing); DZ contributed to methodology, software, writing (review and editing); HJ contributed to methodology, software, and writing (review and editing); YW contributed conception, design, methodology, and writing (review and editing); SJ contributed to conception, design, methodology, software, and writing (review and editing); LS contributed to conception, design, recruitment, and writing (review and editing).
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The author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: Stuart Johnstone was a co-inventor of intellectual property licensed by the University of Wollongong to Neurocognitive Solutions Pty Ltd. and was entitled to a small portion of royalties received by UOW in relation to the sale of any product that used the UOW intellectual property between 2013 and 2017. This intellectual property makes up a proportion of the intellectual property used in Focus Pocus. Other authors reported no conflicts of interest.
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Luo, X., Guo, X., Zhao, Q. et al. A randomized controlled study of remote computerized cognitive, neurofeedback, and combined training in the treatment of children with attention-deficit/hyperactivity disorder. Eur Child Adolesc Psychiatry 32, 1475–1486 (2023). https://doi.org/10.1007/s00787-022-01956-1
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DOI: https://doi.org/10.1007/s00787-022-01956-1