Tickle-Degnen, Linda; Doyle Lyons, Kathleen - In: Social Science & Medicine 58 (2004) 3, pp. 603-614
The expressive mask of Parkinson's disease, a reduced spontaneity, intensity, and fluidity of facial, bodily, and vocal expression, jeopardizes interpersonal interaction and quality of life. Observers have difficulty perceiving the "real" person behind the mask, leading to failed communication...