Band-pass filtering the HRV using the Ornstein-Uhlenbeck process: MatSOAP demonstration

 

Illustration of how the irregularly-sampled the Heart Rate Variability Tachogram can be 3rd-order band-pass filtered.

 

The low frequency hi-pass action may be seen as 'detrending'.

 

Exemplar HRV tachograms are band-pass filtered and the Lomb Scargle periodogram displayed. (more details and code here)

Select example tachogram

 smoothing bandpass [Hz]

Time Series        Lomb Scargle Periodogram

 

detrending (high pass)

low pass  

 

    

 

 

 

 

 

 

Tony Fisher, Antonio Eleuteri,

Dave Groves, Chris Dewhurst
  alpha Fc low: afcl alpha Fc high:ch HRate [Hz]: HR0