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. 2014 Sep 23;8:330. doi: 10.3389/fnbeh.2014.00330

Table 2.

Expression of fear.

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 IMITATION CONDITION OF MUSCLES ON THE RIGHT
Trapezius 22 Intercept −9.720 1.674 −13.017 −6.422 0.345 0.118
Linear 2.873 0.464 1.959 3.787***
Quadratic −0.221 0.041 −0.301 −0.141***
Cubic 0.005 0.001 0.003 0.007***
Forearm 24 Intercept −52.953 6.826 −66.392 −39.514 3.882 1.631
Linear 14.341 1.881 10.637 18.045***
Quadratic −1.071 0.164 −1.393 −0.749***
Cubic 0.025 0.005 0.016 0.034***
Lower back 23 Intercept −10.410 1.491 −13.3463 −7.474 0.238 0.192
Linear 2.820 0.413 2.006 3.634*** 0.003 0.002
Quadratic −0.189 0.036 −0.260 −0.118***
Cubic 0.004 0.001 0.002 0.006***
Calf 21 Intercept −15.298 2.205 −19.640 −10.955 0.987 0.328
Linear 4.256 0.610 3.054 5.458***
Quadratic −0.312 0.053 −0.417 −0.207***
Cubic 0.007 0.001 0.004 0.010***
(B) PARAMETER ESTIMATES OF THE FIXED AND RANDOM EFFECTS IN THE FEAR IMITATION CONDITION OF MUSCLES ON THE LEFT
Trapezius 23 Intercept −9.405 1.804 −12.957 −5.853 0.336 0.121
Linear 2.747 0.501 1.762 3.733***
Quadratic −0.206 0.044 −0.292 −0.120***
Cubic 0.005 0.001 0.002 0.007***
Forearm 21 Intercept −57.413 7.357 −71.905 −42.921 4.546 1.814
Linear 15.304 2.029 11.307 19.301***
Quadratic −1.113 0.177 −1.461 −0.765***
Cubic 0.025 0.005 0.015 0.034***
Lower back 22 Intercept −9.072 1.922 −12.856 −5.288 0.229 0.087
Linear 2.415 0.533 1.366 3.464***
Quadratic −0.151 0.047 −0.243 −0.059***
Cubic 0.003 0.001 0.0001 0.005*
Calf 23 Intercept −13.382 2.358 −18.025 −8.740 1.058 0.341
Linear 3.690 0.651 2.409 4.971***
Quadratic −0.263 0.057 −0.374 −0.151***
Cubic 0.006 0.002 0.003 0.009***

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 imitation condition.

*

p < 0.05;

***

p < 0.001.