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Measure Electrogram Amplitudes

Table of contents

  1. Background
  2. Quickstart
  3. Description
  4. Publications using this code

Background

Electrogram voltage is a commonly-used metric in clinical (but less so in laboratory) electrophysiology. This simple program allows measurement of electrogram voltage in two categories (Va and Vb).

Quickstart

e = rand(1000,1); % simulate some data
voltagecalipers(e);
ud = get(gcf, 'userdata');

Use left click+drag to measure voltage of sections of the electrogram time series and store in Va. (ctrl click+drag to store in Vb).

Description

Left click+drag highlights the section of voltage measurement in green. Ctrl click+drag highlights the section of voltage measurement in red.

Data is stored in a structure in the Figure’s userdata.

Access the measured voltages with:

ud = get(gcf, 'userdata')

ud =

  struct with fields:

    Va: [0 0.94338 0.99331]
    Vb: [0.96277 0.98433]

Publications using this code