Handheld EEG Device Electrode Configuration
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Solution Overview
Problem
Conventional EEG recording systems are often expensive, require professional operation, and are not suitable for portable or handheld use, limiting their accessibility and flexibility for applications that only require single or few EEG channels, such as determining intrinsic Alpha frequency.
Innovation Solution
A handheld and portable EEG device with sensing, reference, and ground electrodes, configured to be held against the scalp, using straps or a headband for secure placement, and equipped with a processor for data collection and analysis, allowing users to record EEG data at specific locations without the need for precise electrode positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional EEG recording systems are used, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts only the essential EEG recording functionality from complex conventional systems by using a simplified electrode configuration (one sensing electrode, one reference electrode, and one ground electrode) that can be integrated into a handheld device, eliminating the need for complex positioning systems while maintaining measurement capability
Solution Approach 2:
The patent employs disposable or replaceable electrode elements that can be easily attached and removed from the handheld device, reducing the need for complex, expensive, and durable equipment while enabling accurate EEG measurements through simple contact with the scalp
2Measurement precision
If conventional EEG systems are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The handheld device is designed to be self-sufficient, with integrated battery power, built-in amplification, and automatic signal processing capabilities that eliminate the need for external equipment or professional operation, allowing users to independently perform EEG recordings by simply holding the device against their scalp
Solution Approach 2:
The handheld device integrates multiple functions including EEG signal acquisition, amplification, filtering, and data processing into a single portable unit, replacing multiple separate conventional EEG system components and enabling operation by non-experts across various applications
3Measurement precision
If conventional EEG systems are used, then measurement precision is improved, but portability deteriorates
Solution Approach 1:
The patent combines the EEG electrode, amplifier, power supply, and data processing components into a single integrated handheld device, eliminating the need for separate equipment and heavy infrastructure while maintaining the capability to record accurate EEG data through unified compact design
Data Source
AI summary
A device for measuring electroencephalography (EEG) recordings of a subject, the portable device including a casing, at least two first electrodes extending from a first surface of the casing, the at least two first electrodes being configured to contact a scalp of the subject during an EEG recording, and at least one second electrode disposed on a second surface of the casing and configured to provide a ground connection during the EEG recording.