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. 2012 Oct 16;7(10):e46586. doi: 10.1371/journal.pone.0046586

Figure 2. Schematic representation of the kinematic measures taken from the analysis of video-recordings.

Figure 2

SHA = Starting head position angle; measured as the inion-to-nasion line angle with respect to the midline at frame0 BRM = Baseline range of head rotational movements, defined as the angular width between the two extreme positions reached in self-paced rotational movements towards each side. FHA = Final head position angle, measured as the inion-to-nasion line angle with respect to the midline at EndFrame. RM = Rotational movement. The scheme represents the RM amplitude, defined as the angular difference of the inion-to-nasion lines between OnsetFrame and EndFrame. Dotted line = midline See text for more details.