Personality Changes After Subthalamic Nucleus Stimulation in Parkinson’s Disease

Author:

Brezovar Simon12,Pažek Lucija3,Kavčič Martin1,Georgiev Dejan14,Trošt Maja15,Flisar Dušan1

Affiliation:

1. Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia

2. Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Koper, Slovenia

3. Department of Psychology, Faculty of Arts, University of Ljubljana, Ljubljana, Slovenia

4. Faculty of Computer and Information Sciences, University of Ljubljana, Ljubljana, Slovenia

5. Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia

Abstract

Background: While deep brain stimulation of the subthalamic nucleus (STN-DBS) significantly improves motor deficits in patients with Parkinson’s disease (PD), it is still unclear whether it affects personality functioning. Objective: The objective of the present study was to examine personality changes in patients with PD after STN-DBS from the perspectives of both the patients and caregivers. Moreover, by assessing the premorbid personalities of the patients, we tried to determine individual vulnerability to STN-DBS-induced personality changes. Methods: In total, 27 patients and their caregivers participated in our retrospective observational study. They were asked to assess the patients’ personality changes with the Iowa Scale of Personality Changes (ISPC) and the patients’ premorbid personalities with the Big Five Inventory (BFI). Results: Caregivers reported significant personality changes in the ISPC domains of Executive Disturbance (p = 0.01) and Disturbed Social Behavior (p = 0.02). Most of the ISPC domains were positively correlated with Conscientiousness, while Executive Disturbance was negatively correlated with Neuroticism of the BFI scale. Conclusion: Our results show that executive and social functioning are the two most vulnerable domains in patients with PD after STN-DBS, especially in those patients who score higher for neuroticism and lower for conscientiousness on the BFI scale. The results of our study may provide movement disorder specialists with better counseling options and better selection of DBS candidates. Caregivers’ perspective might contribute significantly in understanding postoperative personality changes.

Publisher

IOS Press

Subject

Cellular and Molecular Neuroscience,Neurology (clinical)

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