Wearable EEG Band Layout for Repositionable Scalp Sensing
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Solution Overview
Problem
Existing EEG devices struggle to effectively measure and analyze brain activity from multiple scalp points with precision, particularly in neurofeedback applications, due to limitations in electrode placement and adaptability.
Innovation Solution
A wearable EEG device with a main band and movable band, allowing electrodes to be positioned at various scalp locations according to the International 10-20 system, combined with wireless connectivity and AI algorithms for data processing and analysis, enabling dynamic neurofeedback protocols tailored to specific brain regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If EEG electrodes are fixed at specific scalp locations, then the measurement protocol is simple and standardized, but the adaptability to target different brain regions is limited
Solution Approach 1:
The patent implements a movable band that can be dynamically repositioned along the scalp to access different brain regions. The band includes electrodes that can be moved to various locations according to the International 10-20 system, transforming a static electrode configuration into a dynamic one that adapts to different measurement requirements without requiring multiple fixed device configurations
Solution Approach 2:
The EEG device is divided into a main band and a movable band, where the movable band can be independently positioned. This segmentation allows the electrodes to be separated from their fixed positions and reconfigured at different scalp locations, enabling targeted measurement of specific brain regions while maintaining a relatively simple overall device structure
2Measurement precision
If multiple electrodes are placed at fixed positions to measure multiple scalp points, then measurement precision is improved, but the ease of reconfiguration for different brain regions deteriorates
Solution Approach 1:
The movable band with multiple electrodes provides dynamic reconfigurability while maintaining measurement precision. The band can be moved to different scalp locations and repositioned to access various brain regions, allowing the same set of electrodes to precisely measure multiple scalp points without requiring reconfiguration of the entire electrode array
Solution Approach 2:
The movable band serves multiple functions: it can measure EEG signals from different brain regions, accommodate various neurofeedback protocols, and adapt to different experimental or clinical requirements. This multi-functionality is achieved through a single reconfigurable component rather than multiple specialized devices
3Adaptability or versatility
If a movable band is added to enable dynamic electrode positioning, then adaptability to different brain regions is improved, but the device complexity increases
Solution Approach 1:
The movable band incorporates a simple rotational mechanism that allows the band to rotate and reposition electrodes along the scalp. This dynamic element adds adaptability while maintaining relatively simple mechanical construction, avoiding the need for complex robotic positioning systems or multiple adjustable components
Solution Approach 2:
The movable band combines the electrode array, positioning mechanism, and connection to the main band into a single integrated component. This merging reduces the number of separate parts and simplifies the overall device architecture while achieving the desired adaptability for targeting different brain regions
Data Source
AI summary
In at least some embodiments, the present disclosure describes an electroencephalography (EEG) device having a main band and at least one moveable band. The main band may include fixed EEG sensors positioned on the main band so as to contact a scalp of the wearer in at least two scalp zones. The at least one moveable band may include at least one moveable EEG sensor. The moveable band may move relative to the main band to adjust to a position of the moveable EEG sensor(s) on the scalp of the wearer in at least one adjustable zone. The EEG device may include a processing device to measure EEG measurements using the fixed and/or movable EEG sensors, and transmit the EEG measurements to an external computing device to determine a mental condition, a mental state or both of the wearer based on the EEG measurements.