Synthetic Data Generation for Brain-Computer Interfaces: Overview, Benchmarking, and Future Directions

• URL: http://arxiv.org/abs/2603.12296v1
• Date: Wed, 11 Mar 2026 20:36:02 GMT
• Title: Synthetic Data Generation for Brain-Computer Interfaces: Overview, Benchmarking, and Future Directions
• Abstract summary: Brain-computer interfaces (BCIs) are constrained by the limited, heterogeneous, and privacy-sensitive neural recordings.<n> Generating synthetic yet physiologically plausible brain signals has emerged as a compelling way to mitigate data scarcity and enhance model capacity.<n>We systematically categorize existing generative algorithms into four types: knowledge-based, feature-based, model-based, and translation-based approaches.
• Score: 16.591330718086237
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Deep learning has achieved transformative performance across diverse domains, largely driven by the large-scale, high-quality training data. In contrast, the development of brain-computer interfaces (BCIs) is fundamentally constrained by the limited, heterogeneous, and privacy-sensitive neural recordings. Generating synthetic yet physiologically plausible brain signals has therefore emerged as a compelling way to mitigate data scarcity and enhance model capacity. This survey provides a comprehensive review of brain signal generation for BCIs, covering methodological taxonomies, benchmark experiments, evaluation metrics, and key applications. We systematically categorize existing generative algorithms into four types: knowledge-based, feature-based, model-based, and translation-based approaches. Furthermore, we benchmark existing brain signal generation approaches across four representative BCI paradigms to provide an objective performance comparison. Finally, we discuss the potentials and challenges of current generation approaches and prospect future research on accurate, data-efficient, and privacy-aware BCI systems. The benchmark codebase is publicized at https://github.com/wzwvv/DG4BCI.

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