Table 4.

Passive viewing of fearful expressions.

	N		Fixed parameter	SE b	95% CI	(U)	Random parameter	SE Var
			b		(L)		Variance
(A) PARAMETER ESTIMATES OF THE FIXED AND RANDOM EFFECTS IN THE FEAR PASSIVE VIEWING CONDITION OF MUSCLES ON THE RIGHT
Trapezius	21	Intercept	1.011	0.007	0.997	1.024	0.0004	0.0002
		Linear	−0.008	0.003	−0.013	−0.003***	1.258e-6	7.065e-7
		Quadratic	0.001	0.0003	0.0004	0.002***
		Cubic	−3.545e-5	1.346e-5	−6.194e-5	−8.956e-6***
Forearm	14	Intercept	0.993	0.006	0.980	1.006	0.0004	0.0002
		Linear	0.002	0.0004	0.001	0.002***
Lower back	23	Intercept	0.986	0.006	0.975	0.997	0.0005	0.0002
		Linear	0.001	0.0003	0.001	0.002**
Calf	18	Intercept	1.014	0.010	0.993	1.035	0.001	0.0003
		Linear	−0.009	0.004	−0.017	−0.001*	5.390e-6	2.538e-6
		Quadratic	0.002	0.001	0.001	0.003***
		Cubic	−7.415e-5	2.141e-5	−0.0001	−3.198e-5***
(B) PARAMETER ESTIMATES OF THE FIXED AND RANDOM EFFECTS IN THE FEAR PASSIVE VIEWING CONDITION OF MUSCLES ON THE LEFT
Trapezius	22	Intercept	1.007	0.007	0.993	1.021	0.0004	0.0001
		Linear	−0.008	0.003	−0.013	−0.002***	4.823e-6	1.820e-6
		Quadratic	0.001	0.0004	0.0003	0.002***
		Cubic	−3.480e-5	1.432e-5	−6.299e-5	−6.615e-6**
Forearm	12	Intercept	0.985	0.010	0.964	1.005	0.001	0.0003
		Linear	0.007	0.002	0.004	0.011***
		Quadratic	−0.0004	9.819e-5	−0.001	−0.0002***
Lower back	22	Intercept	0.999	0.007	0.985	1.013	0.0004	0.0001
		Linear	−0.008	0.0035	−0.014	−0.002**	6.322e-6	2.614e-6
		Quadratic	0.001	0.0004	0.0004	0.002***
		Cubic	−4.864e-5	1.586e-5	−7.986e-5	−1.742e-5***
Calf	15	Intercept	1.000	0.012	0.976	1.025	0.001	0.0004
		Linear	−0.006	0.005	−0.015	0.003	1.298e-5	5.628e-6
		Quadratic	0.001	0.0006	2.343e-5	0.002*
		Cubic	−5.645e-5	2.337e-5	−0.0001	−1.037e-5**

Parameter estimates, 95% confidence intervals and significance levels of the best fitting model for each muscle on the (A) right and (B) left in the fear passive viewing condition.

^*p < 0.05;

^**p < 0.01;

^***p < 0.001.