Figure 6.

Relative timing ratio (non-transformed) of various kinematic and acoustic time markers for startle and control trials. Time intervals include the time between: voluntary movement onset and lower lip opening onset (t₁), lower lip opening onset to lowest lower lip position (t₂), voluntary movement onset to acoustic burst release (t₄) and lower lip opening to acoustic burst release (t₅), each as a ratio of the time between voluntary movement onset and lower lip lowest position (t₃) (see also Figure 4). Note the similarity in ratios between startle and control trials (all p > 0.5), confirming similar relative timing of the produced movement kinematics and voice onset.