NCT07213999

Brief Summary

The purpose of this research is to test a new recorder that can measure brain activity when stimulation is turned on during deep brain stimulation (DBS) surgery. To continue to improve DBS therapy, the investigators need to better understand the changes in the brain of people with Parkinson's disease (PD). They also need to know how this is affected by DBS. Current recorders measure activity immediately after, but not during, stimulation. Standard-of-care DBS already includes the electrical recording of brain activity during movement of arms and legs. These recordings occur during the microelectrode recording part of the surgery and are used by the medical team to determine where to place the DBS electrode.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
1

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jul 2022

Geographic Reach
1 country

1 active site

Status
completed

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

July 1, 2022

Completed
1 day until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 2, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 2, 2022

Completed
3.2 years until next milestone

First Submitted

Initial submission to the registry

September 29, 2025

Completed
10 days until next milestone

First Posted

Study publicly available on registry

October 9, 2025

Completed
Last Updated

October 9, 2025

Status Verified

October 1, 2025

Enrollment Period

1 day

First QC Date

September 29, 2025

Last Update Submit

October 7, 2025

Conditions

Keywords

DBSDeep brain stimulationParkinson's diseasePD

Outcome Measures

Primary Outcomes (1)

  • Wireless 9-axis inertial measurement unit (IMU) with 3-axis accelerometer, gyroscope, and magnetometer will quantitatively measure the activity of neurons when high or low stimulation frequency is used.

    The investigators will compare the activity of neurons when high or low stimulation frequency is used, when stimulation is delivered ipsilaterally or contralaterally, and when different temporal patterns of DBS pulses are used within the constraints of standard clinical practice.

    For the duration of the participant's' DBS surgery.

Study Arms (1)

Neural recorder

EXPERIMENTAL
Device: Novel neural recorder

Interventions

The neural recorder does not suffer saturation from stimulation artifacts, allowing circuits to record neural signals with higher precision.

Neural recorder

Eligibility Criteria

Age22 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Has unilateral STN or GPi DBS and is approved to undergo second or contralateral side implantation;
  • Diagnosis of idiopathic PD;
  • A history of a good response to levodopa (carbidopa/levodopa) defined as at least a 30% improvement in motor unified Parkinson's disease rating scale (UPDRS) score;
  • DBS surgery at UMN is planned as part of routine clinical care.

You may not qualify if:

  • Other significant neurological disorder
  • History of dementia
  • Patients with post-operative complications or adverse effects (e.g. ON stimulation dystonias) that affect patient safety or confound the experiment will be excluded from further study
  • Pregnant women

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Minnesota Medical Center

Minneapolis, Minnesota, 55455, United States

Location

Related Publications (21)

  • Tabbal SD, Ushe M, Mink JW, Revilla FJ, Wernle AR, Hong M, Karimi M, Perlmutter JS. Unilateral subthalamic nucleus stimulation has a measurable ipsilateral effect on rigidity and bradykinesia in Parkinson disease. Exp Neurol. 2008 May;211(1):234-42. doi: 10.1016/j.expneurol.2008.01.024. Epub 2008 Feb 14.

    PMID: 18329019BACKGROUND
  • Nakamura K, Christine CW, Starr PA, Marks WJ Jr. Effects of unilateral subthalamic and pallidal deep brain stimulation on fine motor functions in Parkinson's disease. Mov Disord. 2007 Apr 15;22(5):619-26. doi: 10.1002/mds.21300.

    PMID: 17230483BACKGROUND
  • Alberts JL, Okun MS, Vitek JL. The persistent effects of unilateral pallidal and subthalamic deep brain stimulation on force control in advanced Parkinson's patients. Parkinsonism Relat Disord. 2008 Aug;14(6):481-8. doi: 10.1016/j.parkreldis.2007.11.014. Epub 2008 Mar 14.

    PMID: 18342565BACKGROUND
  • Pogosyan A, Yoshida F, Chen CC, Martinez-Torres I, Foltynie T, Limousin P, Zrinzo L, Hariz MI, Brown P. Parkinsonian impairment correlates with spatially extensive subthalamic oscillatory synchronization. Neuroscience. 2010 Nov 24;171(1):245-57. doi: 10.1016/j.neuroscience.2010.08.068. Epub 2010 Sep 9.

    PMID: 20832452BACKGROUND
  • A Low-Noise, Wireless, Frequency-Shaping based Neural Recorder

    BACKGROUND
  • Zhi Yang, Jian Xu, Anh Tuan Nguyen, Tong Wu, Wenfeng Zhao, Wing-Kin Tam. Neuronix enables continuous, simultaneous neural recording and electrical microstimulation. Annu Int Conf IEEE Eng Med Biol Soc. 2016 Aug;2016:4451-4454. doi: 10.1109/EMBC.2016.7591715.

    PMID: 28269266BACKGROUND
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Lee J, Fishman YI, Cohen YE, Roberts JA, Cocchi L, Sweeney Y, Lee S, Jung WS, Kim Y, Jung Y, Song YK, Chavane F, Soman K, Muralidharan V, Srinivasa Chakravarthy V, Shivkumar S, Mandali A, Pragathi Priyadharsini B, Mehta H, Davey CE, Brinkman BAW, Kekona T, Rieke F, Buice M, De Pitta M, Berry H, Brunel N, Breakspear M, Marsat G, Drew J, Chapman PD, Daly KC, Bradle SP, Seo SB, Su J, Kavalali ET, Blackwell J, Shiau L, Buhry L, Basnayake K, Lee SH, Levy BA, Baker CI, Leleu T, Philips RT, Chhabria K. 25th Annual Computational Neuroscience Meeting: CNS-2016. 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    PMID: 27534393BACKGROUND
  • Xu J, Wu T, Liu W, Yang Z. A frequency shaping neural recorder with 3 pF input capacitance and 11 plus 4.5 bits dynamic range. IEEE Trans Biomed Circuits Syst. 2014 Aug;8(4):510-27. doi: 10.1109/TBCAS.2013.2293821.

    PMID: 25073127BACKGROUND
  • Baker KB, Zhang J, Vitek JL. Pallidal stimulation: effect of pattern and rate on bradykinesia in the non-human primate model of Parkinson's disease. Exp Neurol. 2011 Oct;231(2):309-13. doi: 10.1016/j.expneurol.2011.06.012. Epub 2011 Jul 1.

    PMID: 21767534BACKGROUND
  • Birdno MJ, Kuncel AM, Dorval AD, Turner DA, Grill WM. Tremor varies as a function of the temporal regularity of deep brain stimulation. Neuroreport. 2008 Mar 26;19(5):599-602. doi: 10.1097/WNR.0b013e3282f9e45e.

    PMID: 18388746BACKGROUND
  • Dorval AD, Kuncel AM, Birdno MJ, Turner DA, Grill WM. Deep brain stimulation alleviates parkinsonian bradykinesia by regularizing pallidal activity. J Neurophysiol. 2010 Aug;104(2):911-21. doi: 10.1152/jn.00103.2010. Epub 2010 May 26.

    PMID: 20505125BACKGROUND
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    PMID: 27401045BACKGROUND
  • Hess CW, Vaillancourt DE, Okun MS. The temporal pattern of stimulation may be important to the mechanism of deep brain stimulation. Exp Neurol. 2013 Sep;247:296-302. doi: 10.1016/j.expneurol.2013.02.001. Epub 2013 Feb 8.

    PMID: 23399890BACKGROUND
  • 15-DOF motor decoding based on a high performance PNS interface and deep neural network

    BACKGROUND
  • Galati S, Mazzone P, Fedele E, Pisani A, Peppe A, Pierantozzi M, Brusa L, Tropepi D, Moschella V, Raiteri M, Stanzione P, Bernardi G, Stefani A. Biochemical and electrophysiological changes of substantia nigra pars reticulata driven by subthalamic stimulation in patients with Parkinson's disease. Eur J Neurosci. 2006 Jun;23(11):2923-8. doi: 10.1111/j.1460-9568.2006.04816.x.

    PMID: 16819981BACKGROUND
  • Lafreniere-Roula M, Kim E, Hutchison WD, Lozano AM, Hodaie M, Dostrovsky JO. High-frequency microstimulation in human globus pallidus and substantia nigra. Exp Brain Res. 2010 Aug;205(2):251-61. doi: 10.1007/s00221-010-2362-8. Epub 2010 Jul 17.

    PMID: 20640411BACKGROUND
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    PMID: 10899228BACKGROUND
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Related Links

MeSH Terms

Conditions

Parkinson Disease

Condition Hierarchy (Ancestors)

Parkinsonian DisordersBasal Ganglia DiseasesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesMovement DisordersSynucleinopathiesNeurodegenerative Diseases

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 29, 2025

First Posted

October 9, 2025

Study Start

July 1, 2022

Primary Completion

July 2, 2022

Study Completion

July 2, 2022

Last Updated

October 9, 2025

Record last verified: 2025-10

Data Sharing

IPD Sharing
Will not share

Locations