Table 3 Median values of within-subjects accuracy.

From: Heart rate dynamics for cognitive load estimation in a driving simulation task

Window

HR metric

Within-subjects accuracy (median values)

Urban VS Urban + Nback

Highway VS Highway + Nback

Highway VS Urban

30 s

Mean IBI

0.60

0.85

0.93

RMSSD

0.58

0.68

0.65

30 IBIs

Mean IBI

0.59

0.82

0.92

PermEn

0.52

0.56

0.53

100 s

Mean IBI

0.64

0.99

1

RMSSD

0.61

0.77

0.59

90 IBIs

Mean IBI

0.63

0.93

1

PermEn

0.52

0.61

0.59