Journal of the International Neuropsychological Society



Emotional and nonemotional facial expressions in people with Parkinson's disease


GWENDA  SIMONS  a1 c1 , MARCIA C. SMITH  PASQUALINI  a1 , VASUDEVI  REDDY  a1 and JULIA  WOOD  a1
a1 Centre for the Study of Emotion, Department of Psychology, University of Portsmouth, Portsmouth PO1 2DY, UK

Article author query
simons g   [PubMed][Google Scholar] 
pasqualini mcs   [PubMed][Google Scholar] 
reddy v   [PubMed][Google Scholar] 
wood j   [PubMed][Google Scholar] 

Abstract

We investigated facial expressivity in 19 people with Parkinson's disease (PD; 14 men and 5 women) and 26 healthy controls (13 men and 13 women). Participants engaged in experimental situations that were designed to evoke emotional facial expressions, including watching video clips and holding conversations, and were asked to pose emotions and imitate nonemotional facial movements. Expressivity was measured with subjective rating scales, objective facial measurements (Facial Action Coding System), and self-report questionnaires. As expected, PD participants showed reduced spontaneous facial expressivity across experimental situations. PD participants also had more difficulty than controls posing emotional expressions and imitating nonemotional facial movements. Despite these difficulties, however, PD participants' overall level of expressivity was still tied to emotional experience and social context. (JINS, 2004, 10, 521–535.)

(Received April 2 2003)
(Revised October 30 2003)
(Accepted December 9 2003)


Key Words: Facial expressions; Parkinson's disease; Emotion; Hypokinesia.

Correspondence:
c1 Reprint requests to: Gwenda Simons, Centre for the Study of Emotion, Department of Psychology, University of Portsmouth, King Henry Building, King Henry I Street, Portsmouth PO1 2DY, UK. E-mail: gwenda.simons@port.ac.uk