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Original Article

Noise coherence in closely-spaced electrodes: The implications for spatial averaged EGG recordings

, , &
Pages 158-161 | Published online: 09 Jul 2009
 

Abstract

Ensemble signal averaging is conventionally used to reduce the noise content o/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.

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