BIOPAC® Systems, Inc. Logo

246 – R-R Interval Processing with the BIOPAC HRV Algorithm

periodogram for time-domain analysisAcqKnowledge calculates heart rate variability (HRV) using the Welch Periodogram and least squares de-trending methods.

To properly select the parameter values needed for the calculation of the Power Spectral Density, which is the “work-horse” tool for Heart Rate Variability analysis, a brief tutorial is presented, including an R-R Interval Processing Approach.

The Welch Periodogram is a method by which a large time-sampled waveform can be frequency-transformed by partitioning the data into shorter segments, transforming each segment, then, averaging the results over all the segments to create a composite frequency space waveform.

See also:

233 – Heart Rate Variability – Preparing Data for Analysis
129 – Heart Rate Variability: Statistical & Geometric Measures

Associated Applications

Spotlight On
NIBP100E Amplifier ships with 3 finger cuffs

Noninvasive Blood Pressure Amplifier

The NIBP100E noninvasive blood pressure system provides continuous, beat‐to‐beat, blood pressure signal and values (Sys, Dia, MAP) and Pulse Rate (PR)*.  The NIBP100E amplifier with CNAP™ technology is controlled by AcqKnowledge software (v5.0.7) for MP160 Research Systems. The system outputs a continuous blood pressure waveform that is similar to a direct arterial pressure waveform. The amplifier […]

View All
Latest News

New Citations | Physiological Measures to Understand Stress

BIOPAC provides software and hardware that allows research teams to study physiological measures related to stress. Here are a few notable studies using BIOPAC equipment for ECG, EDA, and EEG/ERP. Moms Moderating Stress Can relaxation techniques help lower stress on both mother and fetus? Using an MP36R Data Acquisition system to record ECG and EDA, this study […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration