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Louise, Johansson
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Louise, J., Sofia, M., Olofsson, K., Linder, J., Nordh, E., Blomstedt, P., . . . Karlsson, F. (2014). Word-level intelligibility after caudal zona incerta stimulation for Parkinson’s disease. Acta Neurologica Scandinavica, 130(1), 27-33
Open this publication in new window or tab >>Word-level intelligibility after caudal zona incerta stimulation for Parkinson’s disease
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2014 (English)In: Acta Neurologica Scandinavica, ISSN 0001-6314, E-ISSN 1600-0404, Vol. 130, no 1, p. 27-33Article in journal (Refereed) Published
Abstract [en]

Objectives – To investigate the effect of caudal zona incerta-deep brain stimulation (cZi-DBS) on word-level speech intelligibility in patients with Parkinson’s disease, under both an optimal listening condition and a simulated more naturalistic listening condition.

Materials and methods – Spoken single words were extracted from read samples collected from 10 bilaterally implanted patients with PD pre- and post-cZi-DBS. Intelligibility was assessed through a transcription task performed by 32 naive listeners under two listening conditions: (i) with low-amplitude conversational speech added as background and (ii) with no added background noise. The listeners′ responses were scored in terms of agreement with the intended words.

Results – Post-operatively, the total intelligibility score was significantly lower when cZi stimulation was switched on compared with off, for both listening conditions (with and without added background noise). Intelligibility was also significantly lower on stimulation compared with preoperative recordings, but only when assessed in the listening condition without background noise. The listening condition with added background noise resulted in significantly lower intelligibility scores compared with the no added noise condition for all stimulation conditions.

Conclusions – The results of this study indicate that cZi-DBS in patients with PD can be detrimental to word-level speech intelligibility. 

Place, publisher, year, edition, pages
Wiley-Blackwell, 2014
caudal zona incerta, deep brain stimulation, Parkinson's disease, speech intelligibility
National Category
Other Medical Sciences not elsewhere specified
Research subject
Neurology; Linguistics; Neurosurgery
urn:nbn:se:umu:diva-84232 (URN)10.1111/ane.12210 (DOI)000337633400004 ()
En kontrastiv och longitudinell studie gällande effekten av djup hjärnstimulering på Parkinsons-patienters artikulatoriska förmåga.Intonation and rhythm in speech of patients with Parkinson ́s disease
Swedish Research Council, 2009-946Swedish Research Council, 2011- 2294
Available from: 2013-12-19 Created: 2013-12-19 Last updated: 2018-06-08Bibliographically approved

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