Puckering and Blowing Facial Expressions in People With Facial Movement Disorders by Rachel L Denlinger, Jessie M VanSwearingen, Jeffrey F Cohn, and Karen L Schmidt ptjournal Volume 88(8): July 31, 2008 American Physical Therapy Association

Participant Demographics by Facial Movement Disorder. Rachel L Denlinger et al. PHYS THER 2008;88: American Physical Therapy Association

Examples of neutral expression and puckering and blowing movements in an individual with facial movement disorder (facial Action Unit 0 and facial Action Unit 18, according to the Facial Action Coding System12,13). Rachel L Denlinger et al. PHYS THER 2008;88: American Physical Therapy Association

Feature points that capture the movement of the face with Automated Facial Image Analysis software. Rachel L Denlinger et al. PHYS THER 2008;88: American Physical Therapy Association

Comparison of Amplitude, Maximum Speed, and Duration of Movement for Puckering and Blowing. Rachel L Denlinger et al. PHYS THER 2008;88: American Physical Therapy Association