Treatment effects in voice onset time of plosives due to deep brain stimulation of the subthalamic nucleus and the caudal zona incerta
2012 (English)In: Journal of medical speech-language pathology, ISSN 1065-1438, Vol. 20, no 4, 65-69 p.Article in journal (Refereed) Published
The present study investigated the effect of deep brain stimulation (DBS) of the subthalamic nucleus (STN) and the caudal zona inserta (cZi) on motor control and coordination in plosives. 2520 plosive productions, recorded during production of alternate motion rate and sequential motion rate tasks, were measured for voice onset time (VOT) where measurement was possible. Failed measurements were classified by the underlying cause. The resulting data were analyzed separately for each place of articulation of the intended plosive, and compared to the articulatory properties of plosives not meeting the requirements for VOT measurement. The results showed no consistent overall stimulation effect in VOT, regardless of place of the articulatory closure. Further, no overall pattern concerning the distribution of factors causing failures to measure VOT was observed. Instead, the results suggest a more complex interaction between place of articulation, speech task and stimulation target in the determination of treatment effects of DBS in patients with Parkinson’s disease. The results further suggest that VOT may not provide a robust estimate of treatment effects in articulatory proficiency related to plosive production in patients with Parkinson’s disease.
Place, publisher, year, edition, pages
2012. Vol. 20, no 4, 65-69 p.
Other Clinical Medicine
Research subject Linguistics
IdentifiersURN: urn:nbn:se:umu:diva-58214OAI: oai:DiVA.org:umu-58214DiVA: diva2:547283
FunderSwedish Research Council, 2009-946