Quantification of the three-dimensional displacement of normal facial movement.

  title={Quantification of the three-dimensional displacement of normal facial movement.},
  author={Susan E. Coulson and Glen R. Croxson and Wendy Lynne Gilleard},
  journal={The Annals of otology, rhinology, and laryngology},
  volume={109 5},
This study was undertaken to quantify 3-dimensional (3-D) facial movement in normal subjects, and to identify the individual axes in which this movement occurred. Displacement data on 42 subjects were collected and analyzed with the Expert Vision Motion Analysis System. The 3-D displacement was calculated by vectorially subtracting maximum marker movement from previously identified reference marker points. The 3-D range of normal facial movement was quantified, with the greatest displacement… CONTINUE READING

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