Laplacian electrocardiograms with active electrodes

C. C. Lu, R. Plourde, W. Y. Fang, S. Uhlhorn, P. P. Tarjan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Laplacian electrocardiograms (ECG) were acquired with excellent signal to noise ratio (SNR). The signal locates the moment of activation (MOA) at an electrode site from the surface of the chest. A tripolar concentric ring electrode provides a small but well-defined localized signal with high common mode rejection (CMR). The active amplifier mounted on the electrode is powered by two on-board lithium batteries. The amplifier has high CMR ratio (CMRR) and 10 GΩ input impedance. Frequency response is from 5 Hz to 500 Hz. Time shift changes were observed in one subject with bigeminal rhythm.

Original languageEnglish
Title of host publicationSouthern Biomedical Engineering Conference - Proceedings
EditorsJ.D. Bumgardner, A.D. Puckett
Place of PublicationPiscataway, NJ, United States
Number of pages4
StatePublished - Jan 1 1997
EventProceedings of the 1997 16th Southern Biomedical Engineering Conference - Biloxi, MS, USA
Duration: Apr 4 1997Apr 6 1997


OtherProceedings of the 1997 16th Southern Biomedical Engineering Conference
CityBiloxi, MS, USA

ASJC Scopus subject areas

  • Engineering(all)


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