Table 3.

Generalised linear mixed model results.

Indicators	Effect	Estimate	Std.	t-value	Sig.
Respiratory rate	Path	0.41	0.26	1.56	*
	Motion	0.49	0.26	1.88	*
	Path*Motion	−0.31	0.17	−1.88	*
LF/HF	Path*People	0.25	0.17	1.51	*
β/α-EEG	Path	−0.46	0.31	−1.51	*
	People	−0.66	0.32	−2.13	*
	Path*People	0.29	0.20	1.50	**
Fixation frequency	Motion*People	−0.19	0.13	−1.42	*
	Path*People*Motion	0.19	0.08	2.26	*
Average pupil diameter	Path	0.62	0.24	2.59	*
	Path*Motion	−0.41	0.15	−2.70	*
	Path*People	−0.43	0.16	−2.78	*
	Motion*People	−0.35	0.16	−2.29	*
	Path*People*Motion	0.33	0.10	3.40	*
Saccade frequency	Motion	0.38	0.26	1.48	*
	Path*Motion	−0.26	0.16	−1.59	*

*Indicates a significant correlation at the 0.05 level, **Indicates one at the 0.01 level. Non-significant main effects and interaction effects are not included in the table. LF/HF: ratio of the power of the low-frequency component to the high-frequency component of the heart rate variability; β/α-EEG, ratio of β waves to α waves in electroencephalography.