title: Noise coherence in closely-spaced electrodes: the implications for spatial averaged ECG recordings.
abstract: Ensemble signal averaging is conventionally used to reduce the noise content of ECG recordings. One shortcoming of this technique is that it removes the possibility of registering transient signals. As a consequence the simultaneous averaging of spatially related leads has been used. This relies on the recording electrodes receiving correlated signal components for reinforcement together with uncorrelated noise. We have developed a methodology for studying EMG noise reduction by spatial averaging and present results for different electrode spacings which suggest minimum separations for noise rejection.
authors.affiliation: Trafford Centre for Medical Research, University of Sussex, Brighton, UK.
authors.forename: I N
authors.initials: IN
authors.lastname: Turner
authors.forename: W
authors.initials: W
authors.lastname: Wang
authors.forename: M J
authors.initials: MJ
authors.lastname: English
authors.forename: R
authors.initials: R
authors.lastname: Vincent
mesh_terms: D016001:Confidence Intervals; D017097:Electric Impedance; D004562:Electrocardiography; D004566:Electrodes; D006801:Humans; D009119:Muscle Contraction / Q000502:physiology; D012016:Reference Values; D012063:Relaxation / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D012879:Skin Physiological Phenomena