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Behandling af mild traumatisk hjerneskade med High Definition transkraniel jævnstrømsstimulering (HDtDCS-TBI)

24. september 2026 opdateret af: John Hart, Jr., The University of Texas at Dallas

Behandling af verbal genfindingsmangel ved mild traumatisk hjerneskade med højdefinitions transkraniel jævnstrømsstimulering

The purpose of the study is to test whether low level electric stimulation, called transcranial Direct Current Stimulation (tDCS), on the part of the brain (i.e., presupplementary motor area) thought to aid in memory will improve verbal retrieval in military veteran participants with histories of traumatic brain injuries. The primary outcome measures are neuropsychological assessments of verbal retrieval, and the secondary measures are neuropsychological assessments of other cognitive abilities and electroencephalography (EEG) measures. Additionally, the study will examine the degree to which baseline assessments of cognition and concussion history predict responses to treatment over time, both on assessments administered within the intervention period and at follow-up.

Studieoversigt

Detaljeret beskrivelse

Using two treatment arms, the study will examine improvement of verbal retrieval and other cognitive deficits associated with remote traumatic brain injury by comparing (1) 1 milliamp transcranial direct current stimulation (tDCS) active treatment applied to presupplementary motor area for 20 minutes over 15 sessions to (2) sham tDCS following the same schedule. Additionally, after completing the initial active or sham treatment and 3-month follow-up testing sessions, selected participants will be invited back for newly assigned treatment conditions, 20 minutes over 15 sessions and will be and re-evaluated at 2- and 3-months follow-up testing sessions.

Veterans with histories of traumatic brain injuries and observed cognitive deficits will be randomly assigned to one of the two treatment arms (and re-assigned for the second round of intervention, as described above). Primary outcome verbal retrieval measures, secondary neuropsychological and electroencephalography (EEG) measures, and prescreening assessments for study concussion history and contraindications for treatment will be collected prior to being assigned to a treatment arm (i.e., baseline).

Primary outcome verbal retrieval measures and secondary neuropsychological and electroencephalography (EEG) measures will be collected after treatment sessions 5, 10, and 15 and two times following treatment competition (i.e., 2-months and 3-months). For participants selected for the second round of intervention, primary outcome verbal memory measures and secondary neuropsychological and electroencephalography (EEG) measures will be collected again after treatment sessions 5, 10, and 15 and two times following competition of the second treatment (i.e., 2-months and 3-months).

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

136

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 75 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria: Participants are to be between the ages of 18-75, have previously served in the US armed services, and have had a traumatic brain injury that has led to a verbal retrieval deficit based on neuropsychological testing criteria. Traumatic brain injury must be in the mild to moderate range based on evaluation, including, the Ohio State TBI Identification Method (administered by our research group). You must be fluent in speaking and reading English.

Exclusion Criteria: Exclusion criteria include a history of a psychological or neurological disorder, including, dementia of any type, epilepsy or other seizure disorders, severe traumatic brain injury, post-traumatic stress disorder, brain tumor, present drug abuse, stroke, blood vessel abnormalities in the brain, Parkinson's disease, Huntington's disease, or multiple sclerosis. Additionally, exclusion criteria include inability to give informed consent; cranial implants or skull defects that affect tDCS administration; and use of medications that interact with or potentially interact with tDCS effects, including, anti-convulsants, amphetamines, L-dopa, carbamazepine, sulpiride, pergolide, lorazepam, rivastigmine, dextromethorphan, D-cycloserine, flunarizine, ropinirole, or citalopram.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Transcranial direct current stimulation

20 minutes of 1 milliamp transcranial direct current stimulation to presupplementary motor area for 15 sessions

Transcranial direct current stimulation will be delivered via a Neuroelectrics Starstim tES. Stimulation will consist of 1 milliamp stimulation, with anodal stimulation delivered at electrode Fz (International 10/10 System for electroencephalography electrode placement) and electrodes F7, FP1, FP2, and F8 as returns. All electrodes are 1 cm diameter Ag/AgCl electrodes and make contact with the scalp via connective gel. Stimulation will linearly ramp up from 0 milliamps to 1 milliamp over 60 seconds, then remain at 1 milliamp of stimulation over 20 minutes, and finally ramping down at to 0 milliamps over 60 seconds.

Andre navne:
  • tDCS
  • 1 milliamp tDCS
  • High definition tDCS
  • High definition transkraniel jævnstrømsstimulator, Neuroelectrics Starstim tES, SN E20200930-10
Sham-komparator: Sham transcranial direct current stimulation

20 minutes of sham transcranial direct current stimulation to presupplementary motor area for 15 sessions

Sham transcranial direct current stimulation will be delivered via a Neuroelectrics Starstim tES. The sham setup will consist of anodal electrode Fz (International 10/10 System for electroencephalography electrode placement) and electrodes F7, FP1, FP2, and F8 as returns. All electrodes are 1 cm diameter Ag/AgCl electrodes and make contact with the scalp via connective gel. Stimulation will linearly ramp up from 0 milliamps to 1 milliamp over 60 seconds, ramp down to 0 milliamps over 60 seconds and then be left off for 20 minutes.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Controlled Oral Word Association Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Control Word Association Test from baseline to 3-months. Metric: Number of Correct Items Generated

Benton, L.A., Hamsher, K., & Sivan, A.B., (1994). Multilingual aphasia examination. Iowa City: AJA Associates.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Controlled Oral Word Association Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Control Word Association Test from baseline to 2-months. Metric: Number of Correct Items Generated

Benton, L.A., Hamsher, K., & Sivan, A.B., (1994). Multilingual aphasia examination. Iowa City: AJA Associates.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment in Category Fluency
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Category Fluency from baseline to 3-months. Metric: Number of Correct Items Generated

Benton, L.A., Hamsher, K., & Sivan, A.B., (1994). Multilingual aphasia examination. Iowa City: AJA Associates.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment in Category Fluency
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Category Fluency from baseline to 2-months. Metric: Number of Correct Items Generated

Benton, L.A., Hamsher, K., & Sivan, A.B., (1994). Multilingual aphasia examination. Iowa City: AJA Associates.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Semantic Object Retrieval Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Semantic Object Retrieval Test from baseline to 3-months. Metric: Number of Correct Retrievals

Kaplan, E., Goodglass, H., & Weintraub, S., (1983). Boston Naming Test (2nd ed.). Lea & Febiger: Philadelphia.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Semantic Object Retrieval Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Semantic Object Retrieval Test from baseline to 2-months. Metric: Number of Correct Retrievals

Kaplan, E., Goodglass, H., & Weintraub, S., (1983). Boston Naming Test (2nd ed.). Lea & Febiger: Philadelphia.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Boston Naming Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Boston Naming Test from baseline to 3-months. Metric: Number of Correct Names Retrieved

Kraut, M.A., Cherry, B., Pitcock, C.B., Anand, R., Li, J. Vestal, L., Henderson, V.W., and Hart, J. Jr. (2007). The Semantic Object Retrieval Test (SORT) in amnestic cognitive impairment. Cogn. Behav. Neurol. 20, 62- 67.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Boston Naming Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Boston Naming Test from baseline to 2-months. Metric: Number of Correct Names Retrieved

Kraut, M.A., Cherry, B., Pitcock, C.B., Anand, R., Li, J. Vestal, L., Henderson, V.W., and Hart, J. Jr. (2007). The Semantic Object Retrieval Test (SORT) in amnestic cognitive impairment. Cogn. Behav. Neurol. 20, 62- 67.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on California Verbal Learning Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in California Verbal Learning Test from baseline to 3-months. Metric: Number of Correct Retrievals

Delis DC, Kramer JH, Kaplan E, Ober BA. (2017). California verbal learning test (3rd Ed.). Pearson Publishing: San Antonio, TX.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on California Verbal Learning Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in California Verbal Learning Test from baseline to 2-months. Metric: Number of Correct Retrievals

Delis DC, Kramer JH, Kaplan E, Ober BA. (2017). California verbal learning test (3rd Ed.). Pearson Publishing: San Antonio, TX.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Trail Making Test (Part A)
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Trail Making Test (Part A) from baseline to 3-months. Metric: Time to Solution

Reitan, R.M., (1958). Validity of the Trail Making Test as an indicator of organic brain damage. Percept. Motor Skill., 8, 271-276.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Trail Making Test (Part A)
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Trail Making Test (Part A) from baseline to 2-months. Metric: Time to Solution

Reitan, R.M., (1958). Validity of the Trail Making Test as an indicator of organic brain damage. Percept. Motor Skill., 8, 271-276.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Trail Making Test (Part B)
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Trail Making Test (Part B) from baseline to 3-months. Metric: Time to Solution

Reitan, R.M., (1958). Validity of the Trail Making Test as an indicator of organic brain damage. Percept. Motor Skill., 8, 271-276.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Trail Making Test (Part B)
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Trail Making Test (Part B) from baseline to 2-months. Metric: Time to Solution

Reitan, R.M., (1958). Validity of the Trail Making Test as an indicator of organic brain damage. Percept. Motor Skill., 8, 271-276.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Delis Kaplan Color Word Interference Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Delis Kaplan Color Word Interference Test from baseline to 3-months. Metric: Time to Name Items

Delis, D.C., Kaplan, E., & Kramer, J.H., (2001). Delis-Kaplan Executive Function System. San Antonio, TX: The Psychological Corporation.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Delis Kaplan Color Word Interference Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Trail Making Test (Part B) from baseline to 2-months. Metric: Time to Name Items

Reitan, R.M., (1958). Validity of the Trail Making Test as an indicator of organic brain damage. Percept. Motor Skill., 8, 271-276.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Digit Span Forward
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Digit Span Forward from baseline to 3-months. Metric: Memory Span

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Digit Span Forward
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Digit Span Forward from baseline to 2-months. Metric: Memory Span

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Digit Span Backward
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Digit Span Backward from baseline to 3-months. Metric: Memory Span

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Digit Span Backward
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Digit Span Backward from baseline to 2-months. Metric: Memory Span

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Rey-Osterrieth Complex Figure Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change in Rey-Osterrieth Complex Figure Test scores from baseline to 3-months. Metric: Score

Rey, A. (1941). L'examen psychologique dans les cas d'encéphalopathie traumatique. (Les problems.). [The psychological examination in cases of traumatic encepholopathy. Problems.]. Archives de Psychologie, 28, 215- 285.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Rey-Osterrieth Complex Figure Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change in Rey-Osterrieth Complex Figure Test scores from baseline to 2-months. Metric: Score

Rey, A. (1941). L'examen psychologique dans les cas d'encéphalopathie traumatique. (Les problems.). [The psychological examination in cases of traumatic encepholopathy. Problems.]. Archives de Psychologie, 28, 215- 285.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Digit Symbol Substitution Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Digit Symbol Substitution Test from baseline to 3-months. Metric: Number of Items

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Digit Symbol Substitution Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Digit Symbol Substitution Test from baseline to 2-months. Metric: Number of Items

Wechsler, D., (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment
Treatment group differences in change from Baseline to 3-months Post-Treatment on the Grooved Pegboard Test
Tidsramme: Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment

Evaluation of treatment group differences in change on the Grooved Pegboard Test from baseline to 3-months. Metric: Completion Time

Matthews, C.G., and Klove, H. (1964). Instruction manual for the adult neuropsychology test. Madison. Wis: University of Wisconsin Medical School.

Outcome measures will be assessed as change over a period of 17 weeks: Change from baseline to 3-month Post-Treatment
Treatment group differences in change from Baseline to 2-months Post-Treatment on the Grooved Pegboard Test
Tidsramme: Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Evaluation of treatment group differences in change on the Grooved Pegboard Test from baseline to 2-months. Metric: Completion Time

Matthews, C.G., and Klove, H. (1964). Instruction manual for the adult neuropsychology test. Madison. Wis: University of Wisconsin Medical School.

Outcome measures will be assessed as change over a period of 13 weeks: Change from baseline to 2-month Post-Treatment

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Efterforskere

  • Ledende efterforsker: John Hart, MD, The University of Texas at Dallas

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. august 2021

Primær færdiggørelse (Anslået)

30. september 2027

Studieafslutning (Anslået)

30. september 2027

Datoer for studieregistrering

Først indsendt

10. februar 2021

Først indsendt, der opfyldte QC-kriterier

27. april 2021

Først opslået (Faktiske)

3. maj 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

29. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. september 2026

Sidst verificeret

1. september 2026

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