Transcranial Direct Current StimulationNCT02408237
Transcranial Direct Current Stimulation Apparatus for Domiciliary Use
A study testing Active tDCS Ambulatory and Active tDCS Home use in people with Transcranial Direct Current Stimulation and Healthy Participants, run by Hospital de Clinicas de Porto Alegre at 1 site in Brazil.
Trial summary
Neuromodulation is characterized as a technique whose principle neurostimulation to produce inhibition or cortical arousal. The tDCS (transcranial direct current stimulation) is a noninvasive brain stimulation method used to modulate cortical excitability using low intensity direct current (1-2mA) directed to the… Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Transcranial Direct Current Stimulation, Healthy Participants
- What is being tested?
- Active tDCS Ambulatory and Active tDCS Home use
- Type of treatment
- Medical device
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 15 participants
- Where
- 1 siteBrazil
- Study dates
- 28 Mar 2017to 17 Oct 2017
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Men and women, aged between 18 and 40 years.
- Higher education (college graduates in progress or completed).
Who cannot join
- Subject left-handed.
- History of neurological disease.
- History of endocrine disease.
- History of psychiatric disorder.
- History of sleep disorders (apnea, hypersomnia, insomnia, sleepwalking ...).
- Chronic pain.
Show all 14Show fewer
- Chronic inflammatory and oncological diseases.
- Systemic arterial hypertension; ischemic heart disease.
- Kidney and liver failure.
- Regular use of steroids and non-steroids anti inflammatory, opioids and non-opioids, psychotropics, anticonvulsants, alpha and beta-blockers.
- Regular use of drugs, alcohol and tobacco.
- History of brain surgery, tumor, stroke or intracranial implantation of metal (or not implemented).
- Subjects who do not understand Portuguese.
- Body mass index greater than 29.9.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Development of Apparatus of Transcranial Direct Current Stimulation (tDCS) for Domiciliary Use
Neuromodulation is characterized as a technique whose principle neurostimulation to produce inhibition or cortical arousal. The tDCS (transcranial direct current stimulation) is a noninvasive brain stimulation method used to modulate cortical excitability using low intensity direct current (1-2mA) directed to the scalp via cathodes and anodes electrodes; the current reaches the cortex, producing hyperpolarization or depolarization of the axonal membrane potential. Evidence has shown that this method is presented as a technique that can alter cortical and subcortical neural networks. This technique has been used to treat psychiatric disorders such as depression, acute mania, bipolar affective disorder panic, hallucinations, obsessive compulsive disorder, schizophrenia, withdrawal, rehabilitation after-stroke and pain syndromes such as neuropathic pain, migraine, pancreatitis chronic pain and fibromyalgia. It is low-cost technique, with virtually no side effects and carries the therapeutic effect by neuromodulatory pathways by distinct pathways activated by the drugs. In this scenario falls within the importance of developing devices for home use, inexpensive, and easy to use so as to maintain the benefits observed in previous studies. The tDCS is presented as a non-pharmacological option that may be offered in this context in society. It is noteworthy that, if the benefit is demonstrated, the impact will be of great importance to patients and to society, since these are focal techniques and low cost. Because they have no focal adverse effects of conventional drug treatments. Additionally, can be constituted as technical additive to pharmacotherapy in so much pain as in the treatment of other neuropsychiatric disorders. Therefore, further studies should be encouraged to increase knowledge of their effects and mechanisms involved. If the effectiveness of this method for home use is confirmed, the therapeutic impact will undoubtedly be of great importance. However, to make this project come true, the investigators depend on support for the development and validation of tDCS device for home use, so allowing the qualified knowledge can be applied to the clinical setting, as well as advance the development of this area of neuroscience in Brazil. Therefore, the aim of this study is to develop tDCS device for home use.
- Being tested
- Active tDCS Ambulatory, Sham tDCS Ambulatory, Active tDCS Home use, Sham tDCS Home use
- Keywords
- Transcranial direct current stimulation (tDCS), tDCS for domiciliary use, Healthy Participants
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Active tDCS AmbulatoryDevice
Also called Transcranial Direct Current Stimulation
Procedure begins with the placement of an anode electrode placed on the primary motor cortex (cortex contralateral to the dominant) and the cathode is placed on the contralateral supraorbital region. It is used 1mA direct current transcranial stimulation applied for 20 minutes. Will be held a single session of stimulation. The total time, with initial assessment, tDCS session and final evaluation will be approximately 4 hours.
Sham tDCS AmbulatoryDevice
Also called Transcranial Direct Current Stimulation
In sham group, we follow the same procedure and time as the active tDCS ambulatory protocol, but the device will be in the mode sham (inactive). The current is only applied for 30 seconds, so subjects feel a sense of the initial stimulation, but not the remainder receive current. In this group one session will also be held. The total time, with initial assessment, tDCS session and final evaluation will be approximately 4 hours.
Active tDCS Home useDevice
Also called Transcranial Direct Current Stimulation
The procedure and stimulation time is exactly the same that Active tDCS - ambulatory use, but will use the apparatus for domestic use. Will be explained to the participant as placement of the cap and the device management. This group will be made 11 sessions of tDCS, the first held in the Hospital, with supervision of the researcher. The remaining 10 will be held in the participant's home. The total time of the first meeting, with initial assessment, tDCS session and final evaluation will be around 4 hours. The time of last evaluation is approximately 1 hour.
Sham tDCS Home useDevice
Also called Transcranial Direct Current Stimulation
The procedure and stimulation time is exactly the same that Active tDCS - ambulatory use, but will use the apparatus for domestic use. In sham group, we follow the same procedure and time as the active tDCS protocol, but the device will be in the sham mode (inactive). The total time of the first meeting, with initial assessment, tDCS session and final evaluation will be around 4 hours. The time of last evaluation is approximately 1 hour.
| Study group | Role | What they receive |
|---|---|---|
| tDCS Ambulatory & Sham | Active comparator | Active tDCS Ambulatory: 1 mA of current of active tDCS applied for 20 minutes, single session of stimulation. Sham tDCS Ambulatory: applied for 20 minutes, single session of stimulation. Receives: Device: Active tDCS Ambulatory; Device: Sham tDCS Ambulatory |
| tDCS home use & Sham | Active comparator | Active tDCS home use: 11 active tDCS sessions: single session in the hospital and the remaining 10 in the subject's home, with duration of each active tDCS session of 20 min. Sham tDCS home use: 11 sessions of tDCS: single session in the hospital and the remaining 10 in the subject's home, with duration of each sham tDCS session of 20 min. Receives: Device: Active tDCS Home use; Device: Sham tDCS Home use |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cortical excitability on the transcranial magnetic stimulation (TMS)
Evaluation of the variation in cortical excitability parameters pre and post application of tDCS: Motor evoked potential (MEP); Motor threshold (MT); intracortical facilitation, intracortical inhibition, silent period (SP).
Measured: 2 days
Secondary outcomes (5)
Serum levels of Brain Derived Neurotrophic Factor (BDNF)
Measurement of serum levels of BDNF pre and post application of tDCS.
Measured: 2 days
Pressure pain threshold
Measurement of pressure pain threshold pre and post application of tDCS.
Measured: 2 days
Heat pain threshold
Measurement of heat pain threshold pre and post application of tDCS, with quantitative sensory test (QST).
Measured: 2 days
Conditional pain modulation (CPM)
Assessment of conditional pain modulation pre and post application of tDCS, with cold and hot threshold.
Measured: 2 days
Number of participants with adverse events after use tDCS
Assessment of adverse events after use of Transcranial Direct Current Stimulation Apparatus for Domiciliary Use.
Measured: 10 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Apr 2015 (estimated)
- Study start28 Mar 2017
- Primary completion31 Aug 2017
- Study completion17 Oct 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (23)Papers the sponsor has linked to this study.
- Other trials for Transcranial Direct Current StimulationStudies of the same condition, open and under way.
- More trials run by Hospital de Clinicas de Porto AlegreThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Device feasibility
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hospital de Clinicas de Porto Alegre
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Wolnei Caumo, Hospital de Clinicas de Porto Alegre
- Investigators
- Wolnei Caumo, PhD, Study director, +55513359808
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02408237
- Sponsor's protocol ID
- 14-0281
- Status last verified
- Mar 2017
- First submitted
- 25 Feb 2015
- Last updated
- 26 Dec 2017
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Stagg CJ, Nitsche MA. Physiological basis of transcranial direct current stimulation. Neuroscientist. 2011 Feb;17(1):37-53. doi: 10.1177/1073858410386614.
PubMed 21343407Nitsche MA, Paulus W. Sustained excitability elevations induced by transcranial DC motor cortex stimulation in humans. Neurology. 2001 Nov 27;57(10):1899-901. doi: 10.1212/wnl.57.10.1899.
PubMed 11723286Nitsche MA, Fricke K, Henschke U, Schlitterlau A, Liebetanz D, Lang N, Henning S, Tergau F, Paulus W. Pharmacological modulation of cortical excitability shifts induced by transcranial direct current stimulation in humans. J Physiol. 2003 Nov 15;553(Pt 1):293-301. doi: 10.1113/jphysiol.2003.049916. Epub 2003 Aug 29.
PubMed 12949224Martin DM, Alonzo A, Ho KA, Player M, Mitchell PB, Sachdev P, Loo CK. Continuation transcranial direct current stimulation for the prevention of relapse in major depression. J Affect Disord. 2013 Jan 25;144(3):274-8. doi: 10.1016/j.jad.2012.10.012. Epub 2012 Nov 10.
PubMed 23146197Valiengo L, Bensenor IM, Goulart AC, de Oliveira JF, Zanao TA, Boggio PS, Lotufo PA, Fregni F, Brunoni AR. The sertraline versus electrical current therapy for treating depression clinical study (select-TDCS): results of the crossover and follow-up phases. Depress Anxiety. 2013 Jul;30(7):646-53. doi: 10.1002/da.22079. Epub 2013 Apr 26.
PubMed 23625554DaSilva AF, Volz MS, Bikson M, Fregni F. Electrode positioning and montage in transcranial direct current stimulation. J Vis Exp. 2011 May 23;(51):2744. doi: 10.3791/2744.
PubMed 21654618Iyer MB, Mattu U, Grafman J, Lomarev M, Sato S, Wassermann EM. Safety and cognitive effect of frontal DC brain polarization in healthy individuals. Neurology. 2005 Mar 8;64(5):872-5. doi: 10.1212/01.WNL.0000152986.07469.E9.
PubMed 15753425Nitsche MA, Cohen LG, Wassermann EM, Priori A, Lang N, Antal A, Paulus W, Hummel F, Boggio PS, Fregni F, Pascual-Leone A. Transcranial direct current stimulation: State of the art 2008. Brain Stimul. 2008 Jul;1(3):206-23. doi: 10.1016/j.brs.2008.06.004. Epub 2008 Jul 1.
PubMed 20633386Priori A. Brain polarization in humans: a reappraisal of an old tool for prolonged non-invasive modulation of brain excitability. Clin Neurophysiol. 2003 Apr;114(4):589-95. doi: 10.1016/s1388-2457(02)00437-6.
PubMed 12686266Nitsche MA, Paulus W. Excitability changes induced in the human motor cortex by weak transcranial direct current stimulation. J Physiol. 2000 Sep 15;527 Pt 3(Pt 3):633-9. doi: 10.1111/j.1469-7793.2000.t01-1-00633.x.
PubMed 10990547Lang N, Siebner HR, Ward NS, Lee L, Nitsche MA, Paulus W, Rothwell JC, Lemon RN, Frackowiak RS. How does transcranial DC stimulation of the primary motor cortex alter regional neuronal activity in the human brain? Eur J Neurosci. 2005 Jul;22(2):495-504. doi: 10.1111/j.1460-9568.2005.04233.x.
PubMed 16045502Medeiros LF, de Souza IC, Vidor LP, de Souza A, Deitos A, Volz MS, Fregni F, Caumo W, Torres IL. Neurobiological effects of transcranial direct current stimulation: a review. Front Psychiatry. 2012 Dec 28;3:110. doi: 10.3389/fpsyt.2012.00110. eCollection 2012.
PubMed 23293607Garcia-Larrea L, Peyron R, Mertens P, Gregoire MC, Lavenne F, Le Bars D, Convers P, Mauguiere F, Sindou M, Laurent B. Electrical stimulation of motor cortex for pain control: a combined PET-scan and electrophysiological study. Pain. 1999 Nov;83(2):259-73. doi: 10.1016/s0304-3959(99)00114-1.
PubMed 10534598Fregni F, Boggio PS, Lima MC, Ferreira MJ, Wagner T, Rigonatti SP, Castro AW, Souza DR, Riberto M, Freedman SD, Nitsche MA, Pascual-Leone A. A sham-controlled, phase II trial of transcranial direct current stimulation for the treatment of central pain in traumatic spinal cord injury. Pain. 2006 May;122(1-2):197-209. doi: 10.1016/j.pain.2006.02.023. Epub 2006 Mar 27.
PubMed 16564618Fregni F, Gimenes R, Valle AC, Ferreira MJ, Rocha RR, Natalle L, Bravo R, Rigonatti SP, Freedman SD, Nitsche MA, Pascual-Leone A, Boggio PS. A randomized, sham-controlled, proof of principle study of transcranial direct current stimulation for the treatment of pain in fibromyalgia. Arthritis Rheum. 2006 Dec;54(12):3988-98. doi: 10.1002/art.22195.
PubMed 17133529
Study at a glance
From the registry record, last updated by the sponsor on 26 Dec 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Development of Apparatus of Transcranial Direct Current Stimulation (tDCS) for Domiciliary Use
- ClinicalTrials.gov ID
- NCT02408237
- Acronym / sponsor ID
- 14-0281
- Keywords
- Transcranial direct current stimulation (tDCS), tDCS for domiciliary use, Healthy Participants
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- Hospital de Clinicas de Porto AlegreUniversity, hospital or other
- Study start
- 28 Mar 2017 (actual)
- Primary completion
- 31 Aug 2017 (actual)
- Study completion
- 17 Oct 2017 (actual)
- First posted
- 3 Apr 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Neuromodulation is characterized as a technique whose principle neurostimulation to produce inhibition or cortical arousal. The tDCS (transcranial direct current stimulation) is a noninvasive brain stimulation method used to modulate cortical excitability using low intensity direct current (1-2mA) directed to the scalp via cathodes and anodes electrodes; the current reaches the cortex, producing hyperpolarization or depolarization of the axonal membrane potential. Evidence has shown that this method is presented as a technique that can alter cortical and subcortical neural networks. This technique has been used to treat psychiatric disorders such as depression, acute mania, bipolar affective disorder panic, hallucinations, obsessive compulsive disorder, schizophrenia, withdrawal, rehabilitation after-stroke and pain syndromes such as neuropathic pain, migraine, pancreatitis chronic pain and fibromyalgia. It is low-cost technique, with virtually no side effects and carries the therapeutic effect by neuromodulatory pathways by distinct pathways activated by the drugs. In this scenario falls within the importance of developing devices for home use, inexpensive, and easy to use so as to maintain the benefits observed in previous studies. The tDCS is presented as a non-pharmacological option that may be offered in this context in society. It is noteworthy that, if the benefit is demonstrated, the impact will be of great importance to patients and to society, since these are focal techniques and low cost. Because they have no focal adverse effects of conventional drug treatments. Additionally, can be constituted as technical additive to pharmacotherapy in so much pain as in the treatment of other neuropsychiatric disorders. Therefore, further studies should be encouraged to increase knowledge of their effects and mechanisms involved. If the effectiveness of this method for home use is confirmed, the therapeutic impact will undoubtedly be of great importance. However, to make this project come true, the investigators depend on support for the development and validation of tDCS device for home use, so allowing the qualified knowledge can be applied to the clinical setting, as well as advance the development of this area of neuroscience in Brazil. Therefore, the aim of this study is to develop tDCS device for home use.
Study design
- Primary purpose
- Device feasibility
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| tDCS Ambulatory & Sham | Active comparator | Device: Active tDCS Ambulatory, Device: Sham tDCS AmbulatoryActive tDCS Ambulatory: 1 mA of current of active tDCS applied for 20 minutes, single session of stimulation. Sham tDCS Ambulatory: applied for 20 minutes, single session of stimulation. |
| tDCS home use & Sham | Active comparator | Device: Active tDCS Home use, Device: Sham tDCS Home useActive tDCS home use: 11 active tDCS sessions: single session in the hospital and the remaining 10 in the subject's home, with duration of each active tDCS session of 20 min. Sham tDCS home use: 11 sessions of tDCS: single session in the hospital and the remaining 10 in the subject's home, with duration of each sham tDCS session of 20 min. |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- Men and women, aged between 18 and 40 years.
- Higher education (college graduates in progress or completed).
Key exclusion criteria (14 listed)
- Subject left-handed.
- History of neurological disease.
- History of endocrine disease.
- History of psychiatric disorder.
- History of sleep disorders (apnea, hypersomnia, insomnia, sleepwalking ...).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Active tDCS AmbulatoryAlso: Transcranial Direct Current StimulationProcedure begins with the placement of an anode electrode placed on the primary motor cortex (cortex contralateral to the dominant) and the cathode is placed on the contralateral supraorbital region. It is used 1mA direct current transcranial stimulation applied for 20 minutes. Will be held a single session of stimulation. The total time, with initial assessment, tDCS session and final evaluation will be approximately 4 hours. | Device | tDCS Ambulatory & Sham |
| Sham tDCS AmbulatoryAlso: Transcranial Direct Current StimulationIn sham group, we follow the same procedure and time as the active tDCS ambulatory protocol, but the device will be in the mode sham (inactive). The current is only applied for 30 seconds, so subjects feel a sense of the initial stimulation, but not the remainder receive current. In this group one session will also be held. The total time, with initial assessment, tDCS session and final evaluation will be approximately 4 hours. | Device | tDCS Ambulatory & Sham |
| Active tDCS Home useAlso: Transcranial Direct Current StimulationThe procedure and stimulation time is exactly the same that Active tDCS - ambulatory use, but will use the apparatus for domestic use. Will be explained to the participant as placement of the cap and the device management. This group will be made 11 sessions of tDCS, the first held in the Hospital, with supervision of the researcher. The remaining 10 will be held in the participant's home. The total time of the first meeting, with initial assessment, tDCS session and final evaluation will be around 4 hours. The time of last evaluation is approximately 1 hour. | Device | tDCS home use & Sham |
| Sham tDCS Home useAlso: Transcranial Direct Current StimulationThe procedure and stimulation time is exactly the same that Active tDCS - ambulatory use, but will use the apparatus for domestic use. In sham group, we follow the same procedure and time as the active tDCS protocol, but the device will be in the sham mode (inactive). The total time of the first meeting, with initial assessment, tDCS session and final evaluation will be around 4 hours. The time of last evaluation is approximately 1 hour. | Device | tDCS home use & Sham |
Primary outcome
Cortical excitability on the transcranial magnetic stimulation (TMS)
Time frame: 2 days
Evaluation of the variation in cortical excitability parameters pre and post application of tDCS: Motor evoked potential (MEP); Motor threshold (MT); intracortical facilitation, intracortical inhibition, silent period (SP).
5 secondary outcomes
Serum levels of Brain Derived Neurotrophic Factor (BDNF)
Time frame: 2 days
Pressure pain threshold
Time frame: 2 days
Heat pain threshold
Time frame: 2 days
Conditional pain modulation (CPM)
Time frame: 2 days
Number of participants with adverse events after use tDCS
Time frame: 10 days
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Dec 2017.
- Background: PubMed 21343407Stagg CJ, Nitsche MA. Physiological basis of transcranial direct current stimulation. Neuroscientist. 2011 Feb;17(1):37-53. doi: 10.1177/1073858410386614.
- Background: PubMed 11723286Nitsche MA, Paulus W. Sustained excitability elevations induced by transcranial DC motor cortex stimulation in humans. Neurology. 2001 Nov 27;57(10):1899-901. doi: 10.1212/wnl.57.10.1899.
- Background: PubMed 12949224Nitsche MA, Fricke K, Henschke U, Schlitterlau A, Liebetanz D, Lang N, Henning S, Tergau F, Paulus W. Pharmacological modulation of cortical excitability shifts induced by transcranial direct current stimulation in humans. J Physiol. 2003 Nov 15;553(Pt 1):293-301. doi: 10.1113/jphysiol.2003.049916. Epub 2003 Aug 29.
- Background: PubMed 23146197Martin DM, Alonzo A, Ho KA, Player M, Mitchell PB, Sachdev P, Loo CK. Continuation transcranial direct current stimulation for the prevention of relapse in major depression. J Affect Disord. 2013 Jan 25;144(3):274-8. doi: 10.1016/j.jad.2012.10.012. Epub 2012 Nov 10.
- Background: PubMed 23625554Valiengo L, Bensenor IM, Goulart AC, de Oliveira JF, Zanao TA, Boggio PS, Lotufo PA, Fregni F, Brunoni AR. The sertraline versus electrical current therapy for treating depression clinical study (select-TDCS): results of the crossover and follow-up phases. Depress Anxiety. 2013 Jul;30(7):646-53. doi: 10.1002/da.22079. Epub 2013 Apr 26.
- Background: PubMed 21654618DaSilva AF, Volz MS, Bikson M, Fregni F. Electrode positioning and montage in transcranial direct current stimulation. J Vis Exp. 2011 May 23;(51):2744. doi: 10.3791/2744.
- Background: PubMed 15753425Iyer MB, Mattu U, Grafman J, Lomarev M, Sato S, Wassermann EM. Safety and cognitive effect of frontal DC brain polarization in healthy individuals. Neurology. 2005 Mar 8;64(5):872-5. doi: 10.1212/01.WNL.0000152986.07469.E9.
- Background: PubMed 20633386Nitsche MA, Cohen LG, Wassermann EM, Priori A, Lang N, Antal A, Paulus W, Hummel F, Boggio PS, Fregni F, Pascual-Leone A. Transcranial direct current stimulation: State of the art 2008. Brain Stimul. 2008 Jul;1(3):206-23. doi: 10.1016/j.brs.2008.06.004. Epub 2008 Jul 1.
- Background: PubMed 12686266Priori A. Brain polarization in humans: a reappraisal of an old tool for prolonged non-invasive modulation of brain excitability. Clin Neurophysiol. 2003 Apr;114(4):589-95. doi: 10.1016/s1388-2457(02)00437-6.
- Background: PubMed 10990547Nitsche MA, Paulus W. Excitability changes induced in the human motor cortex by weak transcranial direct current stimulation. J Physiol. 2000 Sep 15;527 Pt 3(Pt 3):633-9. doi: 10.1111/j.1469-7793.2000.t01-1-00633.x.
- Background: PubMed 16045502Lang N, Siebner HR, Ward NS, Lee L, Nitsche MA, Paulus W, Rothwell JC, Lemon RN, Frackowiak RS. How does transcranial DC stimulation of the primary motor cortex alter regional neuronal activity in the human brain? Eur J Neurosci. 2005 Jul;22(2):495-504. doi: 10.1111/j.1460-9568.2005.04233.x.
- Background: PubMed 23293607Medeiros LF, de Souza IC, Vidor LP, de Souza A, Deitos A, Volz MS, Fregni F, Caumo W, Torres IL. Neurobiological effects of transcranial direct current stimulation: a review. Front Psychiatry. 2012 Dec 28;3:110. doi: 10.3389/fpsyt.2012.00110. eCollection 2012.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Wolnei Caumo, PhD study director
+55513359808
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Active tDCS Ambulatory and Active tDCS Home use in people with Transcranial Direct Current Stimulation and Healthy Participants, run by Hospital de Clinicas de Porto Alegre at 1 site in Brazil.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Dec 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cortical excitability on the transcranial magnetic stimulation (TMS) (time frame: 2 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02408237, which also lists 23 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Dec 2017.