Table 3.

Pupil-size statistics for significant features.

Group	$\sigma$	Absolute Energy	Standard Error of Linear Trend	FFT Coeff (Real, 2)	Quantile Change (0.4–0.8)	Approximate Entropy	Peak Number (n = 10)
0	0.633	3110.85	0.000937	− 1579.08	0.000002	0.001782	41
1	0.432	1927.64	0.000706	− 1058.30	0.000004	0.002417	71