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Effects of Deep Brain Stimulation in the Caudal Zona Incerta on Verbal Fluency
Umeå University, Sweden .
Umeå University, Sweden .
Linköping University, Department of Biomedical Engineering, Biomedical Instrumentation. Linköping University, The Institute of Technology. (MINT)
Umeå University, Sweden .
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2013 (English)In: Stereotactic and Functional Neurosurgery, ISSN 1011-6125, E-ISSN 1423-0372, Vol. 91, no 1, 24-29 p.Article in journal (Refereed) Published
Abstract [en]

Background: Deep brain stimulation (DBS) of the caudal zona incerta (cZi) is a relatively unexplored and promising treatment in patients with severe essential tremor (ET). Preliminary data further indicate that the ability to produce language may be slightly affected by the treatment. Objective: To evaluate the effects on verbal fluency following cZi DBS in patients with ET. Method: Seventeen consecutive patients who had undergone DBS of the cZi for ET were tested regarding verbal fluency before surgery, 3 days after surgery and after 1 year. Ten patients were also evaluated by comparing performance on versus off stimulation after 1 year. Results: The total verbal fluency score decreased slightly, but significantly, from 22.7 (SD = 10.9) before surgery to 18.1 (SD = 7.5) 3 days after surgery (p = 0.036). After 1 year the score was nonsignificantly decreased to 20.1 (SD = 9.7, p = 0.2678). There was no detectable difference between stimulation on and off after 1 year. Conclusion: There was a tendency of an immediate and mostly transient postoperative decline in verbal fluency following cZi DBS for ET. In some of the patients this reduction was, however, more pronounced and also sustained over time.

Place, publisher, year, edition, pages
Karger , 2013. Vol. 91, no 1, 24-29 p.
Keyword [en]
Deep brain stimulation, Verbal fluency, Essential tremor, Zona incerta, Posterior subthalamic area
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-89813DOI: 10.1159/000342497ISI: 000314561100004OAI: oai:DiVA.org:liu-89813DiVA: diva2:609779
Note

Funding Agencies|University of Umea||Foundation for Clinical Neuroscience at the University Hospital of Umea||

Available from: 2013-03-07 Created: 2013-03-07 Last updated: 2017-12-06Bibliographically approved

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Åström, Mattias

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