The digital filtering process in the external recording of the His bundle activity

Shimon Abboud, Dror Sadeh

Research output: Contribution to journalArticlepeer-review

Abstract

The usual methods of recording the His bundle activity have been based on triggered signal averaging and commonly used analog filters. These filters are of low-frequency cutoff ranging from 10 to 80 Hz and high-frequency cutoff up to 300 Hz. The use of digital filters is studied in the external recording of the His bundle potential which also employs a cross-correlation function for the alignment of the waveforms. By using a low cutoff frequency of 30 Hz and a high-frequency cutoff of 250 Hz, the His bundle is found on the isoelectric line with amplitude between 4 to 7 μV. Fourier analysis of the His bundle waveform thus obtained shows that 90% of the power spectrum is below 150 Hz.

Original languageEnglish
Pages (from-to)418-424
Number of pages7
JournalComputers and Biomedical Research
Volume15
Issue number5
DOIs
StatePublished - Oct 1982

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