title: [Measurement of body surface Laplacian ECG and its signal processing].
abstract: Surface Laplacian of the body surface potential (Laplacian ECG--LECG) is a new approach to resolve spatially distributed bioelectrical source. In this paper, we discussed an LECG sensor which integrated triple concentric ring electrodes and signal adjustor on a printed board. The LECG is measured directly by this sensor. The frequency, amplitude and phase of the power line interference were detected by a nonlinear adaptive filter so that interference was eliminated. The wavelet shrinking technique was used to eliminate the rest of random noise. And we got the high quality LECG signal. It laid the foundation for heart disease diagnosis.
authors: School of Precision Instrument and Opto-Electronic Engineering, Tianjin University, Tianjin 300072, China. yzcao@tju.edu.cn
authors: Yuzhen
authors: Y
authors: Cao
authors: Shijiu
authors: S
authors: Jin
authors: Min
authors: M
authors: Chen
authors: Gang
authors: G
authors: Li
mesh_terms: D000465:Algorithms; D018780:Body Surface Potential Mapping / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D006801:Humans; D012815:Signal Processing, Computer-Assisted