Investigation of Nonlinear Pupil Dynamics by Recurrence Quantification Analysis

Table 2

Two-sided Wilcoxon signed rank test (𝑃 values).

Index	RP light versus darkness	RP versus HDO (light)	RP versus HDO (dark)	HDO darkness versus light
Size (pixel)	0.00001	0.36	0.051	0.00001
MNF (Hz)	0.032	0.24	0.41	0.05
𝐹Low (%)	0.057	0.15	0.048	0.003
𝐹High (%)	0.21	0.55	0.23	0.032
MNF𝑥 (Hz)	0.020	0.75	0.06	0.93
MNF𝑦 (Hz)	0.007	0.061	0.84	0.00007
STD𝑥 (pixel)	0.001	0.17	0.11	0.001
STD𝑦 (pixel)	0.071	0.12	0.037	0.0001
RR (%)	0.0002	0.15	0.010	0.006
DET (%)	0.85	0.22	0.007	0.003
RR𝑥𝑦 (%)	0.79	0.11	0.25	0.73
DET𝑥𝑦 (%)	0.17	0.019	0.54	0.09

bold italic numbers correspond to significant differences.