Fig. 8From: ‘Falling heads’: investigating reflexive responses to head–neck perturbationsSketch of the volunteer placement. The volunteer were placed in supine (a) and prone (b) position. The participant’s head was supported by a trapdoor released at the start of the experiment. The three recorded markers are labelled as M1, M2 and M3 in the figure. Here, \(\varphi = 0\) represents the starting position, where the head is at restBack to article page