Table 1.

Estimated mean (Est. mean) and Standard error (SE) estimated from the linear mixed models.

	T(Pre-Imp-Onset)(ms)		EMG(Pre-Imp-Onset)(%MVC)		T(Pre-Imp-Max)(ms)
	Est. mean	SE	Est. mean	SE	Est. mean	SE
F_Stat (P_Val)	342.5 (< 0.001)		49.6 (< 0.001)		152.7 (< 0.001)
Startle (Int.)	58.7	19.7	37.6	3.0	394.3	23.4
Non-Directional	539.6	19.8	25.5	2.7	791.6	24.6
Directional	483.4	17.2	16.1	2.3	747.5	21.3

Time of the muscle onset, T_{(Pre-Imp-Onset),} and time, T_{(Pre-Imp-Max)}, and amplitude, EMG_{(Pre-Imp-Max)}, of the max muscle activation due to the warning are reported in the columns