8.1. Purpose

This interface is used for comprehensive analysis of heart rate variability (HRV) based on the ECG signal.

8.2. Interface Structure

The interface contains:

8.3. Controls

8.3.1. General Settings Shift RR: Shift for the Poincaré plot (1–15 intervals) Average Window: Averaging window for segmental analysis (10–100 intervals)

8.4. Extraction of RR Intervals

8.4.1. R-Peak Detection Method A function is used that: 8.4.2. Pulse Visualization The upper graph shows:

8.5. HRV Parameters

8.5.1. Time-Domain Parameters HR (Heart Rate):HR = 60 / mean(RR) [bpm] SDNN (Standard Deviation of NN Intervals):SDNN = std(RR) [s] Interpretation: overall heart rate variability. RMSSD...

8.6. Visualization

8.6.1. RR Tachogram Graph of RR intervals over time: 8.6.2. RR Tachogram Spectrum FFT spectrum of the interpolated RR signal: 8.6.3. Poincaré Plot (Local Return Map)...

8.7. Data Export