- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03115021
Neurophysiological Effects of tPCS and tDCS on Patients With Disorders of Consciousness
October 27, 2021 updated by: Aurore Thibaut, University of Liege
This study aims at comparing the effects of transcranial direct current stimulation and transcranial pulsed current stimulation on neurophysiological outcomes on patients with disorders of consciousness.
This study also aims to evaluate the effects of these techniques on patients' level of consciousness.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
12
Phase
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Liege, Belgium, 4000
- University Hospital of Liege
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 75 years (ADULT, OLDER_ADULT)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Fluent in English or French
- Legally authorized surrogate available to provide informed consent
- History of non-traumatic brain injury with loss of consciousness caused by stroke, cerebral hemorrhage, hypoxic ischemic insult, metabolic disorder or infection.
- Has been followed clinically on the CRS-R for a minimum two weeks and has undergone a minimum of 4 assessments with the CRS-R.
- Serial CRS-R scores show at least one subscale on which there is no behavioral sign of conscious awareness (ie, command following, visual fixation or pursuit, object localization or recognition, localization to noxious stimulation, object manipulation, automatic motor responses, functional object use, discernable speech, discernable yes no communication, based on clinically obtained scores contained in the medical record).
- CRS-R screening examination completed by research staff confirms the absence of a behavioral sign of consciousness on a least one CRS-R subscale.
- Medically stable (i.e., no systemic illness or disease) and capable of independent ventilation
Exclusion Criteria:
- History of developmental, neurologic, or major psychiatric disorder resulting in functional disability up to time of enrollment.
- Evidence or surrogate report of uncontrolled seizure disorder
- Metallic brain implant or implanted electronic brain medical devices or pacemaker
- Subjects with craniectomy
- History of cranioplasty in the frontal region or recent cranioplasty that has not yet fully healed
- Pregnancy
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: QUADRUPLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Active tPCS / Sham tDCS
All subject will receive active tPCS and sham tDCS for 20 minutes simultaneously.
|
A current intensity of 2na and a stimulation frequency range of 6-10 Hz will be used with a peri-auricular ear-clip electrode montage for 20 minutes.
Sham tDCS will consist of applying the same parameters as for active but the corresponding device will be turned off after 30 seconds as to simulate the initial sensation of the active current.
A current of 2mA will still be used (but turned off after 30 sec).
The electrodes that will be used will be the same as for the active tDCS condition and the electrodes placement as well.
|
EXPERIMENTAL: Sham tPCS / Active tDCS
All subject will receive sham tPCS and active tDCS for 20 minutes simultaneously.
|
A current intensity of 2mA will be used for 20minutes.
The electrodes that will be used will be standard sponge electrodes.
The anode will be place over the left prefrontal cortex and the cathode over the right supraorbitofrontal area.
Sham tPCS will consist of applying the same parameters as for active but the corresponding device will be turned off after 30 seconds as to simulate the initial sensation of the active current.
A current of 2mA will still be used (but turned off after 30 sec).
The electrodes that will be used will be the same as for the active tPCS condition and the electrodes placement as well.
|
EXPERIMENTAL: Sham tPCS / Sham tDCS
All subject will receive sham tPCS and sham tDCS for 20 minutes simultaneously.
|
Sham tDCS will consist of applying the same parameters as for active but the corresponding device will be turned off after 30 seconds as to simulate the initial sensation of the active current.
A current of 2mA will still be used (but turned off after 30 sec).
The electrodes that will be used will be the same as for the active tDCS condition and the electrodes placement as well.
Sham tPCS will consist of applying the same parameters as for active but the corresponding device will be turned off after 30 seconds as to simulate the initial sensation of the active current.
A current of 2mA will still be used (but turned off after 30 sec).
The electrodes that will be used will be the same as for the active tPCS condition and the electrodes placement as well.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Signal coherence and EEG power as measured by Quantitative electroencephalographic analysis (qEEG)
Time Frame: It will be measured over the course of about 3 weeks
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EEG measures cortical electrical activity and examines the dynamic changes.
|
It will be measured over the course of about 3 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Coma Recovery Scale Revised (CRS-R)
Time Frame: It will be measured over the course of about 3 weeks
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The CRS-R is a standard clinical protocol used to assess patients' level of consciousness.
This test measures the level of response to sensory stimulation, ability to understand language and to communicate.
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It will be measured over the course of about 3 weeks
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (ACTUAL)
May 1, 2018
Primary Completion (ACTUAL)
September 30, 2019
Study Completion (ACTUAL)
October 30, 2019
Study Registration Dates
First Submitted
April 11, 2017
First Submitted That Met QC Criteria
April 11, 2017
First Posted (ACTUAL)
April 14, 2017
Study Record Updates
Last Update Posted (ACTUAL)
October 28, 2021
Last Update Submitted That Met QC Criteria
October 27, 2021
Last Verified
October 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2016P001840
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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