NCT04934371

Brief Summary

The goal of this study is to use non-invasive transcranial direct current stimulation (tDCS) combined with active listening therapy to treat tinnitus and hyperacusis and related conditions.

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
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jan 2025

Geographic Reach
1 country

1 active site

Status
not yet recruiting

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

First Submitted

Initial submission to the registry

June 14, 2021

Completed
8 days until next milestone

First Posted

Study publicly available on registry

June 22, 2021

Completed
3.6 years until next milestone

Study Start

First participant enrolled

January 15, 2025

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2025

Completed
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 15, 2025

Completed
Last Updated

May 8, 2024

Status Verified

May 1, 2024

Enrollment Period

6 months

First QC Date

June 14, 2021

Last Update Submit

May 7, 2024

Conditions

Outcome Measures

Primary Outcomes (5)

  • Mean change in tinnitus severity and annoyance on the tinnitus hearing survey (THS)

    change in participants' perception of tinnitus severity on a 0-4 numeric scale compared pre vs. post intervention (Max = 4; higher score indicates more severe tinnitus)

    through study completion, an average of 1 year

  • Mean change in the Sound Tolerance Questionnaire ratings

    change in the hyper-sensitivity to sound on a scale 0-10 (Max =10, higher score indicates greater sensitivity)

    through study completion, an average of 1 year

  • mean change on the Tinnitus Functional Index (TFI) scores

    change in the tinnitus perception on a scale 0-10 (Max = 10: higher score indicates greater impairment)

    through study completion, an average of 1 year

  • mean change on the Tinnitus Primary Function Questionnaire (TPFQ)

    change in the tinnitus perception (score: 0-10; higher score indicates more severe tinnitus)

    through study completion, an average of 1 year

  • Mean change in tinnitus and hyperacusis ratings on the Visual Analog Scale

    participants' rating on the Visual Analog Scale pre vs. post treatment (0-10), higher scores indicate greater impairment

    through study completion, an average of 1 year

Secondary Outcomes (2)

  • change in electrophysiological measures

    through study completion, an average of 1 year

  • change in functional connectivity measured with fMRI

    through study completion, an average of 1 year

Study Arms (2)

active TDCS and listening therapy

ACTIVE COMPARATOR

TDCS will be administered with NeurConn1 Channel DC-Stimulator Plus (neuroCare Group, München, Germany) according to established guidelines and procedures. The active tDCS will be delivered for 20 minutes at 2mA with a 15-s ramp-up and ramp-down period. Excitatory/anodal tDCS or sham will be administered alongside active listening therapy 5 times a week for 2 weeks.

Device: Transcranial Direct Current Stimulation (tDCS)

sham TDCS and listening therapy

SHAM COMPARATOR

The sham stimulation will also last for 20 min with 15 sec ramp-up and ramp-down, except the current will be turned down gradually to 0 milliamperes (mA) after 30 seconds. The sham procedure provides the same tingling and itching sensation felt during active tDCS. The sham parameters were chosen based on previous reports that the perceived sensations on the skin, such as tingling, fade out in the first 30 s of tDCS

Device: Sham TDCS

Interventions

TDCS is a procedure that sends weak electrical currents between points on the scalp. Some of this current flows through the brain, and may induce temporary changes in brain activity lasting 30-60 minutes beyond the time of stimulation. TDCS is believed to be very low risk. TDCS has been applied in more than 4900 studies and hundreds of people to treat various neurological and psychiatric conditions, including depression, epilepsy, chronic pain and Parkinson's. In this study we will use tDCS to suppress symptom of tinnitus and hyperacusis.

Also known as: NeurConn1 Channel DC-Stimulator Plus (neuroCare Group, München, Germany)
active TDCS and listening therapy
Sham TDCSDEVICE

Sham control will be administered to the same area as active TDCS

Also known as: sham transcranial direct current simulation (tDCS)
sham TDCS and listening therapy

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • chronic tinnitus and or hyperacusis (\> 8 months)
  • adults (18-80 years old)

You may not qualify if:

  • implanted metal or devices including cochlear implants,
  • bullet wounds, head/neck tattoo,
  • metal in the eyes,
  • other diagnosed neurological disorders (e.g., stroke, Parkinson's, dementia, brain tumors),
  • head trauma or brain surgery, psychiatric disorders,
  • personal or family history of epilepsy, other seizure disorders
  • Individuals with a history of Meniere's Disease, pulsatile tinnitus, otosclerosis, and
  • chronic headaches.
  • conductive hearing loss, or
  • fluctuating hearing thresholds
  • pure tone averages \>70dB HL

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Arizona

Tucson, Arizona, 85721-0071, United States

Location

Related Publications (5)

  • Arul-Anandam AP, Loo C, Sachdev P. Transcranial direct current stimulation - what is the evidence for its efficacy and safety? F1000 Med Rep. 2009 Jul 27;1:58. doi: 10.3410/M1-58.

    PMID: 20948722BACKGROUND
  • Baguley DM. Hyperacusis. J R Soc Med. 2003 Dec;96(12):582-5. doi: 10.1177/014107680309601203. No abstract available.

    PMID: 14645606BACKGROUND
  • Cardon E, Joossen I, Vermeersch H, Jacquemin L, Mertens G, Vanderveken OM, Topsakal V, Van de Heyning P, Van Rompaey V, Gilles A. Systematic review and meta-analysis of late auditory evoked potentials as a candidate biomarker in the assessment of tinnitus. PLoS One. 2020 Dec 17;15(12):e0243785. doi: 10.1371/journal.pone.0243785. eCollection 2020.

    PMID: 33332414BACKGROUND
  • Gandiga PC, Hummel FC, Cohen LG. Transcranial DC stimulation (tDCS): a tool for double-blind sham-controlled clinical studies in brain stimulation. Clin Neurophysiol. 2006 Apr;117(4):845-50. doi: 10.1016/j.clinph.2005.12.003. Epub 2006 Jan 19.

    PMID: 16427357BACKGROUND
  • Henry JA, Griest S, Zaugg TL, Thielman E, Kaelin C, Galvez G, Carlson KF. Tinnitus and hearing survey: a screening tool to differentiate bothersome tinnitus from hearing difficulties. Am J Audiol. 2015 Mar;24(1):66-77. doi: 10.1044/2014_AJA-14-0042.

    PMID: 25551458BACKGROUND

MeSH Terms

Conditions

TinnitusHyperacusisHearing Disorders

Interventions

Transcranial Direct Current Stimulation

Condition Hierarchy (Ancestors)

Ear DiseasesOtorhinolaryngologic DiseasesSensation DisordersNeurologic ManifestationsNervous System DiseasesSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeuticsConvulsive TherapyPsychiatric Somatic TherapiesBehavioral Disciplines and ActivitiesElectroshockPsychological Techniques

Study Officials

  • Aneta Kielar, PhD

    University of Arizona

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
All audiological evaluations and tinnitus questionnaires performed before and after treatment will be carried out by trained personnel blind to the treatment condition. The neuroConn DC stimulator has a "study mode" where input codes will be used (the researcher and the participants will be blinded to these codes) and the settings generated will be either a sham or actual stimulation
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: Each patient will undergo tDCS and active listening therapy. This will be double-blinded randomized-sham controlled intervention during which excitatory/anodal tDCS or sham will be administered alongside active listening therapy 5 times a week for 2 weeks. After 2-month follow up participants will be crossed-over to the other treatment type. (Model AB- BA
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 14, 2021

First Posted

June 22, 2021

Study Start

January 15, 2025

Primary Completion

June 30, 2025

Study Completion

December 15, 2025

Last Updated

May 8, 2024

Record last verified: 2024-05

Data Sharing

IPD Sharing
Will not share

Locations