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Authors Jin Y, Mao Z, Ling Z, Xu X, Zhang Z, Yu X
Received 15 August 2017
Accepted for publication 28 September 2017
Published 27 November 2017 Volume 2017:13 Pages 2891—2902
DOI https://doi.org/10.2147/NDT.S149227
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Amy Norman
Peer reviewer comments 2
Editor who approved publication: Professor Wai Kwong Tang
Background: Parkinson’s
disease (PD) patients exhibit deficits in emotional recognition and expression
abilities, including emotional faces and voices. The aim of this study was to
explore emotional processing in pre-deep brain stimulation (pre-DBS) PD
patients using two sensory modalities (visual and auditory).
Methods: Fifteen PD patients who needed DBS surgery and 15 healthy, age-
and gender-matched controls were recruited as participants. All participants
were assessed by the Karolinska Directed Emotional Faces database 50 Faces
Recognition test. Vocal recognition was evaluated by the Montreal Affective
Voices database 50 Voices Recognition test. For emotional facial expression,
the participants were asked to imitate five basic emotions (neutral, happiness,
anger, fear, and sadness). The subjects were required to express nonverbal
vocalizations of the five basic emotions. Fifteen Chinese native speakers were
recruited as decoders. We recorded the accuracy of the responses, reaction
time, and confidence level.
Results: For emotional recognition and expression, the PD group scored lower on
both facial and vocal emotional processing than did the healthy control group.
There were significant differences between the two groups in both reaction time
and confidence level. A significant relationship was also found between
emotional recognition and emotional expression when considering all
participants between the two groups together.
Conclusion: The PD group exhibited poorer performance on both the recognition
and expression tasks. Facial emotion deficits and vocal emotion abnormalities
were associated with each other. In addition, our data allow us to speculate
that emotional recognition and expression may share a common system.
Keywords: Parkinson’s disease, emotional recognition, emotional expression,
visual, auditory