Gastrointestinal Motility Analysis

The ECA (slow wave) and ERA (electrical response activity) components of the electrogastrogram (EGG) can be isolated using the digital filters in AcqKnowledge.

  • To isolate the ECA component, apply a 0.1 Hz lowpass filter to the EGG data.
  • To filter out the ERA component, which consists of spike bursts present on the plateaus of the ECA signal, run a 0.5 Hz highpass filter.

Perform filtering in real time as the electrogastrogram is recorded, or in post processing, after EGG data has been collected.

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