Biosignal Active Noise Cancellation

Innovation

We developed a revolutionary dual-electrode EEG system that dramatically improves signal quality through active noise cancellation. This patented technology (US Patent Application No. 2023/0240581A1) represents a significant advancement in biosignal detection.

Key Features

• Dual-electrode design: Each sensor contains two electrodes - one for biosignals, one for environmental noise
• Active noise cancellation: Real-time separation of brain signals from environmental interference
• Enhanced comfort: Elastic geodesic net structure for comfortable long-term wear
• Reduced setup time: Simplified electrode placement and preparation

Technical Approach

Hardware Innovation

• Geodesic net structure with elastic conductive elements
• Paired electrode configuration at each sensor location
• Integrated analog-to-digital conversion at each electrode

Signal Processing

• Advanced noise separation algorithms
• Reverse Artifact Subspace Reconstruction (rASR)
• Real-time processing capabilities
• Multi-modal signal integration

Applications

• Brain-Computer Interfaces: Enhanced signal quality for BCI applications
• Clinical EEG: Improved diagnostic capabilities in noisy environments
• Mobile EEG: Enabling high-quality recordings outside laboratory settings
• Research: Opening new possibilities for naturalistic neuroscience studies

Impact

This technology addresses fundamental challenges in EEG recording:

• Reduces environmental electrical interference by >80%
• Decreases setup time by 50%
• Enables recordings in previously unsuitable environments
• Maintains signal quality during subject movement

Patent & Publications

• US Patent Application 2023/0240581A1
• Technical details and validation studies in preparation

Collaborators

• UCSD Swartz Center for Computational Neuroscience
• Institute for Neural Computation