title: Capacitive measurement of ECG for ubiquitous healthcare.
abstract: The technology for measuring ECG using capacitive electrodes and its applications are reviewed. Capacitive electrodes are built with a high-input-impedance preamplifier and a shield on their rear side. Guarding and driving ground are used to reduce noise. An analysis of the intrinsic noise shows that the thermal noise caused by the resistance in the preamplifier is the dominant factor of the intrinsic noise. A fully non-contact capacitive measurement has been developed using capacitive grounding and applied to a non-intrusive ECG measurement in daily life. Many ongoing studies are examining how to enhance the quality and ease of applying electrodes, thus extending their applications in ubiquitous healthcare from attached-on-object measurements to wearable or EEG measurements.
authors: Department of Oriental Biomedical Engineering, Sangji University, Wonju, 220-702, Korea.
authors: Yong Gyu
authors: YG
authors: Lim
authors: Jeong Su
authors: JS
authors: Lee
authors: Seung Min
authors: SM
authors: Lee
authors: Hong Ji
authors: HJ
authors: Lee
authors: Kwang Suk
authors: KS
authors: Park
mesh_terms: D025802:Electric Capacitance; D004562:Electrocardiography; D004566:Electrodes; D006801:Humans; D018670:Monitoring, Ambulatory / Q000295:instrumentation*