Effects of facial biofeedback on hypomimia, emotion recognition, and affect in Parkinson's disease

Rosskopf, Sarah and Wechsler, Theresa Friederike and Tucha, Stefanie and Muehlberger, Andreas (2023) Effects of facial biofeedback on hypomimia, emotion recognition, and affect in Parkinson's disease. JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY. ISSN 1355-6177, 1469-7661

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Abstract

Objectives:Facial expressions are a core component of emotions and nonverbal social communication. Therefore, hypomimia as secondary symptom of Parkinson's disease (PD) has adverse effects like social impairment, stigmatization, under-diagnosis and under-treatment of depression, and a generally lower quality of life. Beside unspecific dopaminergic treatment, specific treatment options for hypomimia in PD are rarely investigated. This quasi-randomized controlled trial evaluated the short-term effects of facial electromyogram (EMG) based biofeedback to enhance facial expression and emotion recognition as nonverbal social communication skills in PD patients. Furthermore effects on affect are examined.Method:A sample of 34 in-patients with PD were allocated either to facial EMG-biofeedback as experimental group or non-facial exercises as control group. Facial expression during posing of emotions (measured via EMG), facial emotion recognition, and positive and negative affect were assessed before and after treatment. Stronger improvements were expected in the EMG-biofeedback in comparison to the control group.Results:The facial EMG-biofeedback group showed significantly greater improvements in overall facial expression, and especially for happiness and disgust. Also, overall facial emotion recognition abilities improved significantly stronger in the experimental group. Positive affect was significantly increased in both groups with no significant differences between them, while negative affect did not change within both groups.Conclusions:The study provides promising evidence for facial EMG-biofeedback as a tool to improve facial expression and emotion recognition in PD. Embodiment theories are discussed as working mechanism.

Item Type: Article
Uncontrolled Keywords: NEGATIVE AFFECT; EXPRESSIONS; INDIVIDUALS; DEPRESSION; VOLUNTARY; MASKING; MIMICRY; PEOPLE; Parkinson's disease; emotion; hypomimia; biofeedback; quality of life; facial electromyography; depression; stereotyping
Subjects: 100 Philosophy & psychology > 150 Psychology
Divisions: Human Sciences > Institut für Psychologie > Lehrstuhl für Klinische Psychologie und Psychotherapie - Lehrstuhl für Psychologie VIII - Prof. Dr. Andreas Mühlberger
Depositing User: Dr. Gernot Deinzer
Date Deposited: 13 Mar 2024 09:40
Last Modified: 13 Mar 2024 09:40
URI: https://pred.uni-regensburg.de/id/eprint/59510

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