A. Record good ECG data
B. Prepare data for the tachogram1. Filter the ECG data
2. Transform the data using Template Correlation functionC. Create a tachogram
D. Identify problems with the tachogram data
E. Correct tachogram data
“Results reveal that even a single heart period artifact, occurring within a 2-min recording epoch, can lead to errors of estimate heart period variability that are considerably larger than typical effect sizes in psychophysiological studies.”
—Berntson & Stowell, 1998
For the Application Note detailing HRV Calculations, see Application Note 129 – Heart Rate Variability. For an automated HRV script, see Script 056: Calculating HRV Statistics.
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