Reduced facial expressiveness in Parkinson's disease: A pure motor disorder?

Lucia Ricciardi, Matteo Bologna, Francesca Morgante, Diego Ricciardi, Bruno Morabito, Daniele Volpe, Davide Martino, Alessandro Tessitore, Massimiliano Pomponi, Anna R ita Bentivoglio, Roberto Bernabei, Alfonso Fasano

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND AND AIMS: Impaired emotional facial expressiveness is an important feature in Parkinson's disease (PD). Although there is evidence of a possible relationship between reduced facial expressiveness and altered emotion recognition or imagery in PD, it is unknown whether other aspects of the emotional processing, such as subjective emotional experience (alexithymia), might influence hypomimia in this condition. In this study wee aimed to investigate possible relationship between reduced facial expressiveness and altered emotion processing (including facial recognition and alexithymia) in patients with PD.

METHODS: Forty PD patients and seventeen healthy controls were evaluated. Facial expressiveness was rated on video recordings, according to the UPDRS-III item 19 and using an ad hoc scale assessing static and dynamic facial expression and posed emotions. Six blind raters evaluated the patients' videos. Emotion facial recognition was tested using the Ekman Test; alexithymia was assessed using Toronto Alexithymia Scale (TAS-20).

RESULTS: PD patients had a significantly reduced static and dynamic facial expressiveness and a deficit in posing happiness and surprise. They performed significantly worse than healthy controls in recognizing surprise (p=0.03). The Ekman total score positively correlated with the global expressiveness (R^2=0.39, p=0.01) and with the expressiveness of disgust (R^2=0.32, p=0.01). The occurrence of alexithymia was not different between PD patients and HC; however, a significant negative correlation between the expressiveness of disgust was found for a subscore of TAS (R^2=-.447, p=0.007).

CONCLUSIONS: Reduced facial expressiveness in PD may be in part related to difficulties with emotional recognition in a context of an unimpaired subjective emotional experience.

Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalJournal of the Neurological Sciences
Volume358
Issue number1-2
DOIs
Publication statusPublished - Nov 15 2015

Keywords

  • Alexithymia
  • Emotion
  • Emotion recognition
  • Facial amimia
  • Feeling
  • Parkinson's disease

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

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