A Dry Electrode for Universal Accessibility to EEG

用于普遍获取脑电图的干电极

• 批准号: 10761609
• 负责人: Walid Soussou
• 金额: $ 50万
• 依托单位: QUASAR, INC.
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10761609
• 关键词: Acceleration; Address; African; African American; African American population; Applied Research; Attention; Black American; Black Populations; Black race; Brain; Caring; Collection; Creativeness; Data; Development; Disparity; Dryness; Electrodes; Electroencephalography; Electromagnetics; Environment; Epilepsy; Exclusion; Exclusion Criteria; Gel; Geometry; Hair; Head; Healthcare; Human; Length; Liquid substance; Location; Manikins; Measures; Medical; Medical Research; Mental Depression; Methods; Monitor; Morphologic artifacts; Motion; Neurologic; Noise; Outcome; Participant; Penetration; Persons; Phase; Population; Positioning Attribute; Process; Race; Records; Research; Research Subjects; Resistance; Saline; Scalp structure; Signal Transduction; Skin; Small Business Innovation Research Grant; Source; Surface; System; Technology; Testing; Thick; Underrepresented Populations; Validation; Width; Work; absorption; access disparities; cognitive process; commercial application; comparison control; cost; data acquisition; design; electric impedance; improved; innovation; novel; quantum; recruit; sensor; tool

Abstract Electroencephalography (EEG) measures the brain’s local field potential from the surface of the scalp. This method is useful for studying cognitive processes, neurological states, and medical conditions. Its relative low- cost, ease-of use, and non-invasiveness increase its utility in brain monitoring for both research and medical applications. Unfortunately, the process of acquiring EEG is often not inclusive of all research subjects. EEG typically requires scalp abrasion and application of conductive gels to create a low impedance contact between exposed skin and the electrode tips. This approach is critical to obtaining good signals and reducing artifacts; however, it creates challenges for the hair of Black or African American people. Studies have shown that tightly curled hair (Type 4) of African origin impacts the ability of EEG caps to place electrodes to measure brain activity and the hair’s low absorption of liquid can impact the conductance of the saline solutions used to conduct signal. In addition, people of African origin often select hairstyles with various braiding, locs, or weaving with synthetic hair, which can impede electrode placement and are commonly listed as exclusion criteria for research, thereby excluding people of African origin at higher rates. Furthermore, even when they do participate in collection, EEG technology unsuited to their hair type/style may lead to lower signal-to-noise ratios than on other subjects, resulting in their data being rejected from the study’s analysis, thereby creating an unintentional racial barrier to study inclusion. Quantum Applied Science & Research (QUASAR), Inc. has developed innovative dry active pinned electrodes that work through hair without the need for abrasion or gels and acquire high-quality EEG signals comparable to those from gold-standard wet electrodes. This Phase I SBIR project aims to establish the feasibility of new dry or wet electrode tip designs that address the challenges posed by Type 4 hair types and commonly associated hairstyles. New designs will be tested on phantom mannequin heads and validated on human participants. The overall outcome of this project will be novel EEG electrode designs and systems that will reduce EEG access disparity for people of African origin in medical research and healthcare applications.

抽象的 脑电图（EEG）从头皮表面测量大脑的局部场电位。这 方法可用于研究认知过程，神经系统状态和医学状况。它相对低 - 成本，易用性和非侵入性提高了研究和医疗的大脑监测效用 申请。不幸的是，获取脑电图的过程通常并不包括所有研究主题。 脑电图通常需要头皮磨损和导电凝胶的应用才能产生低阻抗接触 在裸露的皮肤和电极尖端之间。这种方法对于获得良好的信号和减少至关重要 文物；但是，它给黑人或非裔美国人的头发带来了挑战。研究表明 非洲起源的紧密卷发（4型）影响脑电图放置电极以测量的能力 大脑活动和头发的低液体滥用会影响盐水溶液的电导 进行信号。此外，非洲起源的人通常会选择各种编织，LOC或 用合成头发编织，这可能会妨碍电极放置，并通常被列为排除 研究标准，因此以更高的速度排除了非洲人的人。此外，即使他们 确实参与收集，不适合其头发/风格的脑电图技术可能会导致较低的信噪 比率比其他主题，导致其数据被研究的分析拒绝，从而创建 研究包容性的无意种族障碍。 量子应用科学与研究（Quasar），Inc。开发了创新的干燥活性固定电极 通过头发起作用而无需磨损或凝胶并获得高质量的EEG信号可比 来自金色标准的湿电极。 I阶段I SBIR项目旨在确定新的新项目 干燥或湿电极尖端设计，以解决由4型头发构成的挑战，通常 相关的发型。新设计将在Phantom Mannequin头上进行测试，并在人类上进行验证 参与者。该项目的总体结果将是新颖的EEG电极设计和系统 在医学研究和医疗保健应用中，减少非洲起源人员的脑电图访问差异。