BIOPAC Poincare plot from R-R tachogram

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Poincare plot from R-R tachogram

A Poincare plot is a plot of R-R(n) on the X axis vs. R-R(n+1) on the Y axis.

Obtain the R-R tachogram using the HRV tachogram option.
- AcqKnowledge 4: Choose Analysis > Heart Rate Variability
- AcqKnowledge 3.9: Choose Transform > Specialized Analysis > Heart Rate Variability
Duplicate the R-R tachogram.
- Click Ctrl-D or Command-D, or
- Choose Edit > Duplicate Waveform
Align the data so that for every data point the two channels contain two consecutive R-R intervals.
- Delete 3 data points from one of copy of the tachogram, and
- Delete 2 data points from the other copy
Confirm that the R-Rn interval is the top/bottom channel (if necessary, use Display > Set Wave Positions to reorder).
Select X/Y display mode
- Click the X/Y icon on the toolbar, or
- Choose Display > Show > X/Y