Limited value of a common spatial patterns approach to online discrimination of left- and right-hand motor imagery in a pediatric sample
Background Applications of brain-computer interfaces (BCIs) in pediatric rehabilitation are expanding. However, it is unclear whether popular BCI paradigms developed for adults are feasible in children. This study evaluated, in a typically developing pediatric sample, a time-honored, adult, motor im...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-12-01
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| Series: | Brain-Apparatus Communication |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/27706710.2024.2425299 |
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| Summary: | Background Applications of brain-computer interfaces (BCIs) in pediatric rehabilitation are expanding. However, it is unclear whether popular BCI paradigms developed for adults are feasible in children. This study evaluated, in a typically developing pediatric sample, a time-honored, adult, motor imagery BCI paradigm that discriminates between imagined left- and right-hand movements.Methods We developed an electroencephalographic pediatric BCI with visual-auditory feedback through a game interface controlled by left- and right-hand motor imagery (MI). The BCI was evaluated in one offline (with sham feedback) and four online (with real-time classifier feedback) sessions with 11 typically developing children aged 9–14 years. The BCI was personalized to each child, via a well-established adult pipeline, namely, a regularized linear discriminant classifier with selected common spatial patterns in mu and beta bands as inputs.Results Unlike in adults, the online child-specific BCI demonstrated limited discrimination between left and right-hand MI using spatial features (52 ± 9%). Only left-hand MI versus rest in a retrospective analysis with personalized feature sets reached 70 ± 3%.Conclusions Our findings suggest that cortical activity corresponding to MI in our pediatric sample departed from well-documented, conspicuously lateralized adult patterns. Further investigation of developmental MI patterns is warranted to identify a pediatric approach to MI BCI. |
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| ISSN: | 2770-6710 |