Key result
Selection of cardiac vagal control indices and correction procedures should be based on the experimental situation and availability rather than orthodox adherence to idealized standards.
The choice of heart-rate variability indices should be tailored to the experimental context rather than strictly adhering to idealized standards like stationarity.
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Context-specific vagal index selection may enhance validity; leaves open consensus on standardized HRV procedures.
Friedman et al. (2002) conducted a review in Heart rate variability (HRV) analysis. Heart rate variability (HRV) indices was evaluated. Selection of cardiac vagal control indices and correction procedures should be based on the experimental situation and availability rather than orthodox adherence to idealized standards.
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