NCT05493670

Brief Summary

Parkinson's disease (PD) patients treated with deep brain stimulation (DBS) of the subthalamic nucleus (STN) have unpredictable and varied speech outcomes after this treatment. Our research will prospectively document speech performance before, during and 6- and 12-months after STN-DBS in 80 surgically treated patients and compared with 40 non-surgical controls with Parkinson's disease. This study will provide unique insights into the role of STN in speech production, document speech outcome in a comprehensive fashion, identify factors that predict functional communication ability 12 months after STN-DBS, and test the feasibility of low frequency DBS in reversing DBS-induced speech declines in order to optimize treatment strategies for those living with Parkinson's disease.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
120

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Oct 2020

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 15, 2020

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

April 9, 2021

Completed
1.3 years until next milestone

First Posted

Study publicly available on registry

August 9, 2022

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2025

Completed
Last Updated

December 22, 2023

Status Verified

December 1, 2023

Enrollment Period

4.7 years

First QC Date

April 9, 2021

Last Update Submit

December 21, 2023

Conditions

Keywords

Deep Brain StimulationParkinsonSpeechMovementIntelligibility

Outcome Measures

Primary Outcomes (1)

  • Neuron Firing Rate

    DBS-STN participants will complete simple speech and motor tasks during surgery while the surgeon records neuron firing rate using Microelectrode Recording (MER).

    Intraoperatively

Secondary Outcomes (2)

  • Speech Intelligibility with DBS ON

    Speech intelligibility with DBS ON will be measured at the 6 month follow up and 12 month follow up for the DBS-STN group.

  • Speech Intelligibility (stimulation OFF or not applicable)

    Speech intelligibility without stimulation will be measured at baseline, 6 month, and 12 month visits for all participants.

Study Arms (2)

DBS-STN

The DBS-STN group will consist of individuals with Parkinson's disease who have already elected to undergo deep brain stimulation surgery.

Control

The control group will consist of individuals with Parkinson's disease who are not undergoing deep brain stimulation placement. No interventions will be completed with the control group.

Eligibility Criteria

Age21 Years - 84 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

We will recruit 80 STN-DBS participants and 40 participants with Parkinson's disease to serve as non-surgical controls. All Parkinson's disease patients judged to be candidates for DBS surgery by the implanting neurosurgeon and movement disorder neurologists who decide to undergo bilateral surgery will be considered candidates for the study. Control subjects must have a diagnosis of Parkinson's disease and no plan to undergo DBS surgery.

You may qualify if:

  • have a confirmed diagnosis of idiopathic Parkinson's disease and no atypical Parkinsonism features
  • experience significant motor fluctuations
  • currently taking and responsive to dopaminergic medications (e.g. Levodopa)
  • use English as their primary language
  • lack significant cognitive impairment and be able to consent to participate

You may not qualify if:

  • Significant hearing loss/reliance on hearing aids

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Iowa Hospitals and Clinics

Iowa City, Iowa, 52242, United States

RECRUITING

Related Publications (11)

  • Sidtis D, Sidtis JJ. Subcortical Effects on Voice and Fluency in Dysarthria: Observations from Subthalamic Nucleus Stimulation. J Alzheimers Dis Parkinsonism. 2017;7(6):392. doi: 10.4172/2161-0460.1000392. Epub 2017 Oct 30.

    PMID: 29456879BACKGROUND
  • Sidtis JJ, Alken AG, Tagliati M, Alterman R, Van Lancker Sidtis D. Subthalamic Stimulation Reduces Vowel Space at the Initiation of Sustained Production: Implications for Articulatory Motor Control in Parkinson's Disease. J Parkinsons Dis. 2016 Mar 19;6(2):361-70. doi: 10.3233/JPD-150739.

    PMID: 27003219BACKGROUND
  • Skodda S. Effect of deep brain stimulation on speech performance in Parkinson's disease. Parkinsons Dis. 2012;2012:850596. doi: 10.1155/2012/850596. Epub 2012 Nov 21.

    PMID: 23227426BACKGROUND
  • Sturman MM, Vaillancourt DE, Metman LV, Bakay RA, Corcos DM. Effects of five years of chronic STN stimulation on muscle strength and movement speed. Exp Brain Res. 2010 Sep;205(4):435-43. doi: 10.1007/s00221-010-2370-8. Epub 2010 Aug 10.

    PMID: 20697699BACKGROUND
  • Tourville JA, Guenther FH. The DIVA model: A neural theory of speech acquisition and production. Lang Cogn Process. 2011 Jan 1;26(7):952-981. doi: 10.1080/01690960903498424.

    PMID: 23667281BACKGROUND
  • Dayal V, Limousin P, Foltynie T. Subthalamic Nucleus Deep Brain Stimulation in Parkinson's Disease: The Effect of Varying Stimulation Parameters. J Parkinsons Dis. 2017;7(2):235-245. doi: 10.3233/JPD-171077.

    PMID: 28505983BACKGROUND
  • Pal PK, Lee CS, Samii A, Schulzer M, Stoessl AJ, Mak EK, Wudel J, Dobko T, Tsui JK. Alternating two finger tapping with contralateral activation is an objective measure of clinical severity in Parkinson's disease and correlates with PET. Parkinsonism Relat Disord. 2001 Oct;7(4):305-309. doi: 10.1016/s1353-8020(00)00048-1.

    PMID: 11344014BACKGROUND
  • Lipski WJ, Alhourani A, Pirnia T, Jones PW, Dastolfo-Hromack C, Helou LB, Crammond DJ, Shaiman S, Dickey MW, Holt LL, Turner RS, Fiez JA, Richardson RM. Subthalamic Nucleus Neurons Differentially Encode Early and Late Aspects of Speech Production. J Neurosci. 2018 Jun 13;38(24):5620-5631. doi: 10.1523/JNEUROSCI.3480-17.2018. Epub 2018 May 22.

    PMID: 29789378BACKGROUND
  • Seifried C, Weise L, Hartmann R, Gasser T, Baudrexel S, Szelenyi A, van de Loo S, Steinmetz H, Seifert V, Roeper J, Hilker R. Intraoperative microelectrode recording for the delineation of subthalamic nucleus topography in Parkinson's disease. Brain Stimul. 2012 Jul;5(3):378-387. doi: 10.1016/j.brs.2011.06.002. Epub 2011 Jul 8.

    PMID: 21782543BACKGROUND
  • Hebb AO, Darvas F, Miller KJ. Transient and state modulation of beta power in human subthalamic nucleus during speech production and finger movement. Neuroscience. 2012 Jan 27;202:218-33. doi: 10.1016/j.neuroscience.2011.11.072. Epub 2011 Dec 6.

    PMID: 22173017BACKGROUND
  • Dromey C, Kumar R, Lang AE, Lozano AM. An investigation of the effects of subthalamic nucleus stimulation on acoustic measures of voice. Mov Disord. 2000 Nov;15(6):1132-8. doi: 10.1002/1531-8257(200011)15:63.0.co;2-o.

    PMID: 11104196BACKGROUND

MeSH Terms

Conditions

Parkinson DiseaseDysarthriaSpeech

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative DiseasesArticulation DisordersSpeech DisordersLanguage DisordersCommunication DisordersNeurobehavioral ManifestationsNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsVerbal BehaviorCommunicationBehavior

Study Officials

  • Jeremy Greenlee, MD

    University of Iowa Dept of Neurosurgery

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Jeremy Greenlee, MD

CONTACT

Annie Rohl, MS

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor of Neurosurgery

Study Record Dates

First Submitted

April 9, 2021

First Posted

August 9, 2022

Study Start

October 15, 2020

Primary Completion

July 1, 2025

Study Completion

July 1, 2025

Last Updated

December 22, 2023

Record last verified: 2023-12

Data Sharing

IPD Sharing
Will not share

Locations