Different outcomes of phonemic verbal fluency in Parkinson’s disease patients with subthalamic nucleus deep brain stimulation

ABSTRACT Subthalamic nucleus deep brain stimulation (STN-DBS) is a surgical technique to treat motor symptoms in patients with Parkinson’s disease (PD). Studies have shown that STN-DBS may cause a decline in verbal fluency performance. We aimed to verify the effects of STN-DBS on the performance of phonemic verbal fluency in Brazilian PD patients. Sixteen participants were evaluated on the Unified Parkinson’s Disease Rating Scale - Part III and for phonemic fluency (“FAS” version) in the conditions of on- and off-stimulation. We identified two different patterns of phonemic verbal fluency outcomes. The results indicate that there may be no expected pattern of effect of bilateral STN-DBS in the phonemic fluency, and patients may present with different outcomes for some reason not well understood.

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Bibliographic Details
Main Authors: Romann,Aline Juliane, Beber,Bárbara Costa, Olchik,Maira Rozenfeld, Rieder,Carlos R M.
Format: Digital revista
Language:English
Published: Academia Brasileira de Neurologia - ABNEURO 2017
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2017000400216
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