Table 1.
Heart rate variability indices.
| Parameter | Meaning, Interpretation | Calculation | |
|---|---|---|---|
| Dawes-Redman | |||
| STV |
Short Term Variability Integrative sympatho-vagal modulations, fluctuation periods of seconds |
Mean difference between consecutive heart beat interval epochs of 3.75 s, w/o DC and artifacts | #x0003C;50% |
| LTV |
Long Term Variability Fluctuation periods of minutes |
Mean fluctuation range of heart beat interval epochs in 1 min sections, w/o DC and artifacts <50% | |
| fABAS | |||
| AMP | Fluctuation range of heart beat intervals, overall sympatho-vagal modulations | 20–95 inter-quantile distance of detrended NN interval series | |
| gMSE3 | Complexity of sympatho-vagal rhythms | Generalized Mutual Information at coarse graining level 3 of beat interval series, see Hoyer et al. (2013a) | |
| skewness | Asymmetry, contribution of vagal and sympathetic activity with their different time constants, decline of DC and formation of AC | skewness of instantaneous heart rate series | |
| pNN5 | Fast, vagal Mainly vagally modulated rhythms | Percentage of differences between adjacent NN intervals that are >5 ms. | |
| lnVLF/LF | Baseline fluctuation in relation to sympatho-vagal modulations | Ratio between very low (0.02–0.08 Hz) and low (0.08–0.2 Hz) frequency band power | |
| Pattern segmented | |||
| gMSE3 w/o DC | |||
| gMSE3 basic | w/o DC - parameters under exclusion of DC | Mean of parameter of subsegments without DC | |
| skewness w/o DC | |||
| skewness basic | |||
| pNN5 w/o DC | basic - parameters of basic rhythm | Mean of parameter of subsegments w/o DC and w/o AC | |
| pNN5 basic | |||
| lnVLF/LF w/o DC | |||
| lnVLF/LF basic |