The Wilcoxon rank sum tests revealed that comparable levels of baseline activity in control and PD groups over both the LLS and the OO were found; although disgust#1 elicited more muscle activity over the LLS and the OO for control group than for PD group, this difference did not reach statistical significance; disgust#2 elicited significantly more LLS activity for control than for PD.
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Objectifying facial expressivity assessment of Parkinson's patients: preliminary study.
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