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. Author manuscript; available in PMC: 2014 Jun 13.
Published in final edited form as: J Neurolinguistics. 2012 Mar;25(4):74–94. doi: 10.1016/j.jneuroling.2011.08.006

Figure 2.

Figure 2

Plot of averaged marker speed (in m/s) against averaged PWS (in mm2) for speakers with PD (red), ALS (green) and control speakers (black). Data are shown for the four tongue markers, the lower and upper lips, and the mandibular incisor marker. See text for discussion of data.