HealthyCogStimNCT02067689
Cognitive Stimulation Study
A study testing Transcranial Direct Current Stimulation in people with Healthy, run by University of Florida at 1 site in United States.
Trial summary
This study will evaluate the influence of non-invasive brain stimulation on different elements of cognitive function in healthy persons between the ages of 18-90 years. It will specifically use transcranial direct current stimulation (tDCS) to evaluate the relationship between certain brain structures and cognitive… Read more about this study
- Who is it for?
- Ages 18 to 90 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- Transcranial Direct Current Stimulation
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 18 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2016to 10 May 2019
- 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 90 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Healthy adult
- Eligible to undergo an MRI
Who cannot join
- History of neurologic disease or dementia
- History of psychiatric disease which required hospitalization, or
- Current depression
- History of head trauma with unconsciousness
- Developmental learning disability (e.g., dyslexia, dyscalculia)
- History of vital organ failure (e.g., heart, lungs, kidneys, liver)
- Currently taking any psycho-active medications
- Pregnancy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Neuromodulation of Cognitive Function Using Transcranial Direct Current Stimulation
This study will evaluate the influence of non-invasive brain stimulation on different elements of cognitive function in healthy persons between the ages of 18-90 years. It will specifically use transcranial direct current stimulation (tDCS) to evaluate the relationship between certain brain structures and cognitive abilities, like attention, working memory, visual search, etc.
Read the detailed description
The research team conducting the research procedures will perform several tests. Investigators will ask participants if participants are right or left handed, how far participants went in school, their job, and a medical history including brain and nervous system disorders, psychiatric disorders, heart related disorders, and other significant disorders. Investigators will ask participants for their current medications. Investigators will ask participants about their history of cognitive function. If participants are a woman of child bearing potential, Investigators will perform a pregnancy test and the result must be negative to receive stimulation. Prior to stimulation, Investigators will have participants complete pre-stimulation computerized cognitive tests involving tasks where participants are asked to respond to images or sounds presented by a computer. Investigators will also collect measures of physiological function during the testing session, specifically heart rate, blood pressure, skin conductance, respiration rate, and pupillary response. These will be measured using recording electrodes attached to the fingertip, arm, and chest and a respiration band around the chest. A small camera will record changes in their pupil size. Investigators will also collect measures of brain structure and function using magnetic resonance imaging. Investigators will also ask participants to fill out a questionnaire describing their experience during each study session.
If participants decide to take part in this study, participants will be asked to participate in up to four different testing sessions separated by at least 24 hours. In each of these testing sessions, participants will be asked to receive either electrical stimulation or placebo stimulation during different testing sessions. Placebo stimulation looks like and is performed in the same way as electrical stimulation, but stimulation is stopped before it can have an effect. Placebo stimulation is used in research studies to show what effect a treatment has compared with receiving a lower level of stimulation or nothing at all. Studies have shown, however, that about 1 in 3 persons who take a placebo have an effect, if only for a short time. Participants will not know whether participants are receiving placebo stimulation or electrical stimulation, but that information is available if it is needed. In the remainder of the description of what will be done, both the electrical stimulation and the placebos stimulation will be called "stimulation."
Stimulation will be completed with a Transcranial Direct Current Stimulator. This is an experimental device that is not currently approved by the Food and Drug Administration (FDA) for any treatment. Participants will receive stimulation for up to 20 minutes. To perform the stimulation, Investigators will either apply two salt-water soaked sponges to their head or five smaller gel covered disk electrodes. Gel-covered disk electrodes are placed in specially designed holders held in a cap that fits on their head. Caps are fitted to their head size for comfort. Following the stimulation, Investigators will remove the sponges or electrodes and have participants perform a series of computerized tests to assess their cognitive ability. These involve tasks where participants will have to respond to images or sounds presented by a computer screen or headphones.
Participants may also be asked to undergo magnetic resonance imaging (MRI) of their brain before, during, and after undergoing transcranial direct current stimulation. Investigators will use an MRI safe Transcranial Direct Current Stimulator to perform stimulation and evaluate how their brain responds to stimulation. Magnetic resonance imaging (MRI) is a procedure that allows doctors to look inside the body by using a scanner that sends out a strong magnetic field and radio waves. This procedure is used routinely for medical care and is very safe for most people, but participants will be monitored during the entire MRI scan in case any problems occur. The risks of MRI are:
The MRI scanner contains a very strong magnet. Therefore, participants may not be able to have the MRI if participants have any type of metal implanted in their body, for example, any pacing device (such as a heart pacer), any metal in their eyes, or certain types of heart valves or brain aneurysm clips. Someone will ask participants questions about this before participants have the MRI.
There is not much room inside the MRI scanner. Participants may be uncomfortable if participants do not like to be in close spaces ("claustrophobia"). During the procedure, participants will be able to talk with the MRI staff through a speaker system, and, in the event of an emergency, participants can tell them to stop the scan.
The MRI scanner produces a loud hammering noise, which has produced hearing loss in a very small number of patients. Participants will be given earplugs to reduce this risk.
- Conditions
- Healthy
- Being tested
- Transcranial Direct Current Stimulation
- Keywords
- Normal cognition in healthy adults, Cognitive function, Transcranial direct current stimulation, Structural Magnetic Resonance Imaging, Functional Magnetic Resonance Imaging
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Transcranial Direct Current StimulationDevice
Also called Soterix DC Stimulator, Neuroconn DC Stimulator MR
Application of a weak electrical current to the scalp
| Study group | Role | What they receive |
|---|---|---|
| Hemisphere Stimulation | Experimental | Participants will receive 1mA vs. 2mA transcranial direct current stimulation of a) right and b) left brain structures (1x1 stimulation), and sham/placebo stimulation. A subset of participants will undergo right and left brain stimulation, but all will undergo sham stimulation. Receives: Device: Transcranial Direct Current Stimulation |
| Temporal Lobe Stimulation | Experimental | A group of participants will undergo 1x1 transcranial direct current stimulation of the temporal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left structures using 4x1 stimulation (e.g., 1mA left temporal, 1mA right temporal, sham; 2mA left temporal, 2mA right temporal, sham). Receives: Device: Transcranial Direct Current Stimulation |
| Frontal Lobe Stimulation | Experimental | A group of participants will undergo 1x1 transcranial direct current stimulation of the frontal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left frontal structures using 4x1 stimulation (e.g., 1mA left frontal, 1mA right frontal, sham; 2mA left frontal, 2mA right frontal, sham). Receives: Device: Transcranial Direct Current Stimulation |
| Parietal Lobe Stimulation | Experimental | A group of participants will undergo 1x1 transcranial direct current stimulation of the parietal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left parietal lobes using 4x1 stimulation (e.g., 1mA left parietal lobes, 1mA right parietal lobes, sham; 2mA parietal lobes, 2mA right parietal lobes, sham). Receives: Device: Transcranial Direct Current Stimulation |
| Supplementary Motor Stimulation | Experimental | A group of participants will undergo 1x1 transcranial direct current stimulation of the Supplementary Motor Area at 1mA vs. 2mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left Supplementary Motor Area using 4x1 stimulation (e.g., 1mA left Supplementary Motor Area, 1mA right Supplementary Motor Area, sham; 2mA left Supplementary Motor Area, 2mA right Supplementary Motor Area, sham). Receives: Device: Transcranial Direct Current Stimulation |
| Brain Structure Interactions Group | Experimental | This cohort will evaluate the interaction between frontal, parietal, temporal, and SMA regions in cognitive function. To accomplish this goal will require evaluation of change in cognitive and neurocognitive performance following transcranial direct current stimulation of different brain regions within the same subjects. For example, we will evaluate the contribution of frontal, SMA, and parietal regions by asking participants to undergo stimulation sessions at each of these sites, in addition to a sham session. Receives: Device: Transcranial Direct Current Stimulation |
What is being measured
The primary outcome is the main question the study is designed to answer.
NIH Toolbox Scores
Measured: Baseline
NIH Toolbox Scores
Measured: 1 hour after baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Feb 2014 (estimated)
- Study startJan 2016
- Primary completion10 May 2019
- Study completion10 May 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by University of FloridaThe 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
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 18 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Florida
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Adam J Woods, PhD, Principal investigator, University of Florida
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02067689
- Sponsor's protocol ID
- IRB201300836
- Acronym
- CogStim
- Status last verified
- May 2019
- First submitted
- 7 Feb 2014
- Last updated
- 28 Jan 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Jan 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Neuromodulation of Cognitive Function Using Transcranial Direct Current Stimulation
- ClinicalTrials.gov ID
- NCT02067689
- Acronym / sponsor ID
- CogStim / IRB201300836
- Conditions
- Healthy
- Keywords
- Normal cognition in healthy adults, Cognitive function, Transcranial direct current stimulation, Structural Magnetic Resonance Imaging, Functional Magnetic Resonance Imaging
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 18 participants (actual)
- Lead sponsor
- University of FloridaUniversity, hospital or other
- Study start
- Jan 2016 (actual)
- Primary completion
- 10 May 2019 (actual)
- Study completion
- 10 May 2019 (actual)
- First posted
- 20 Feb 2014 (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.
This study will evaluate the influence of non-invasive brain stimulation on different elements of cognitive function in healthy persons between the ages of 18-90 years. It will specifically use transcranial direct current stimulation (tDCS) to evaluate the relationship between certain brain structures and cognitive abilities, like attention, working memory, visual search, etc.
Detailed description
The research team conducting the research procedures will perform several tests. Investigators will ask participants if participants are right or left handed, how far participants went in school, their job, and a medical history including brain and nervous system disorders, psychiatric disorders, heart related disorders, and other significant disorders. Investigators will ask participants for their current medications. Investigators will ask participants about their history of cognitive function. If participants are a woman of child bearing potential, Investigators will perform a pregnancy test and the result must be negative to receive stimulation. Prior to stimulation, Investigators will have participants complete pre-stimulation computerized cognitive tests involving tasks where participants are asked to respond to images or sounds presented by a computer. Investigators will also collect measures of physiological function during the testing session, specifically heart rate, blood pressure, skin conductance, respiration rate, and pupillary response. These will be measured using recording electrodes attached to the fingertip, arm, and chest and a respiration band around the chest. A small camera will record changes in their pupil size. Investigators will also collect measures of brain structure and function using magnetic resonance imaging. Investigators will also ask participants to fill out a questionnaire describing their experience during each study session.
If participants decide to take part in this study, participants will be asked to participate in up to four different testing sessions separated by at least 24 hours. In each of these testing sessions, participants will be asked to receive either electrical stimulation or placebo stimulation during different testing sessions. Placebo stimulation looks like and is performed in the same way as electrical stimulation, but stimulation is stopped before it can have an effect. Placebo stimulation is used in research studies to show what effect a treatment has compared with receiving a lower level of stimulation or nothing at all. Studies have shown, however, that about 1 in 3 persons who take a placebo have an effect, if only for a short time. Participants will not know whether participants are receiving placebo stimulation or electrical stimulation, but that information is available if it is needed. In the remainder of the description of what will be done, both the electrical stimulation and the placebos stimulation will be called "stimulation."
Stimulation will be completed with a Transcranial Direct Current Stimulator. This is an experimental device that is not currently approved by the Food and Drug Administration (FDA) for any treatment. Participants will receive stimulation for up to 20 minutes. To perform the stimulation, Investigators will either apply two salt-water soaked sponges to their head or five smaller gel covered disk electrodes. Gel-covered disk electrodes are placed in specially designed holders held in a cap that fits on their head. Caps are fitted to their head size for comfort. Following the stimulation, Investigators will remove the sponges or electrodes and have participants perform a series of computerized tests to assess their cognitive ability. These involve tasks where participants will have to respond to images or sounds presented by a computer screen or headphones.
Participants may also be asked to undergo magnetic resonance imaging (MRI) of their brain before, during, and after undergoing transcranial direct current stimulation. Investigators will use an MRI safe Transcranial Direct Current Stimulator to perform stimulation and evaluate how their brain responds to stimulation. Magnetic resonance imaging (MRI) is a procedure that allows doctors to look inside the body by using a scanner that sends out a strong magnetic field and radio waves. This procedure is used routinely for medical care and is very safe for most people, but participants will be monitored during the entire MRI scan in case any problems occur. The risks of MRI are:
The MRI scanner contains a very strong magnet. Therefore, participants may not be able to have the MRI if participants have any type of metal implanted in their body, for example, any pacing device (such as a heart pacer), any metal in their eyes, or certain types of heart valves or brain aneurysm clips. Someone will ask participants questions about this before participants have the MRI.
There is not much room inside the MRI scanner. Participants may be uncomfortable if participants do not like to be in close spaces ("claustrophobia"). During the procedure, participants will be able to talk with the MRI staff through a speaker system, and, in the event of an emergency, participants can tell them to stop the scan.
The MRI scanner produces a loud hammering noise, which has produced hearing loss in a very small number of patients. Participants will be given earplugs to reduce this risk.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 6
| Arm | Type | Receives |
|---|---|---|
| Hemisphere Stimulation | Experimental | Device: Transcranial Direct Current StimulationParticipants will receive 1mA vs. 2mA transcranial direct current stimulation of a) right and b) left brain structures (1x1 stimulation), and sham/placebo stimulation. A subset of participants will undergo right and left brain stimulation, but all will undergo sham stimulation. |
| Temporal Lobe Stimulation | Experimental | Device: Transcranial Direct Current StimulationA group of participants will undergo 1x1 transcranial direct current stimulation of the temporal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left structures using 4x1 stimulation (e.g., 1mA left temporal, 1mA right temporal, sham; 2mA left temporal, 2mA right temporal, sham). |
| Frontal Lobe Stimulation | Experimental | Device: Transcranial Direct Current StimulationA group of participants will undergo 1x1 transcranial direct current stimulation of the frontal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left frontal structures using 4x1 stimulation (e.g., 1mA left frontal, 1mA right frontal, sham; 2mA left frontal, 2mA right frontal, sham). |
| Parietal Lobe Stimulation | Experimental | Device: Transcranial Direct Current StimulationA group of participants will undergo 1x1 transcranial direct current stimulation of the parietal lobes at 1 mA vs. 2 mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left parietal lobes using 4x1 stimulation (e.g., 1mA left parietal lobes, 1mA right parietal lobes, sham; 2mA parietal lobes, 2mA right parietal lobes, sham). |
| Supplementary Motor Stimulation | Experimental | Device: Transcranial Direct Current StimulationA group of participants will undergo 1x1 transcranial direct current stimulation of the Supplementary Motor Area at 1mA vs. 2mA vs. sham stimulation. A second group of participants will undergo 1mA or 2mA stimulation, and sham, in right vs. left Supplementary Motor Area using 4x1 stimulation (e.g., 1mA left Supplementary Motor Area, 1mA right Supplementary Motor Area, sham; 2mA left Supplementary Motor Area, 2mA right Supplementary Motor Area, sham). |
| Brain Structure Interactions Group | Experimental | Device: Transcranial Direct Current StimulationThis cohort will evaluate the interaction between frontal, parietal, temporal, and SMA regions in cognitive function. To accomplish this goal will require evaluation of change in cognitive and neurocognitive performance following transcranial direct current stimulation of different brain regions within the same subjects. For example, we will evaluate the contribution of frontal, SMA, and parietal regions by asking participants to undergo stimulation sessions at each of these sites, in addition to a sham session. |
Who may qualify
- Ages
- 18 to 90 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Healthy adult
- Eligible to undergo an MRI
Key exclusion criteria (8 listed)
- History of neurologic disease or dementia
- History of psychiatric disease which required hospitalization, or
- Current depression
- History of head trauma with unconsciousness
- Developmental learning disability (e.g., dyslexia, dyscalculia)
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 |
|---|---|---|
| Transcranial Direct Current StimulationAlso: Soterix DC Stimulator, Neuroconn DC Stimulator MRApplication of a weak electrical current to the scalp | Device | Brain Structure Interactions Group, Frontal Lobe Stimulation, Hemisphere Stimulation, Parietal Lobe Stimulation, Supplementary Motor Stimulation, Temporal Lobe Stimulation |
Primary outcome
NIH Toolbox Scores
Time frame: Baseline
NIH Toolbox Scores
Time frame: 1 hour after baseline
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 28 Jan 2020.
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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.
Adam J Woods, PhD principal investigator
University of Florida
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Transcranial Direct Current Stimulation in people with Healthy, run by University of Florida at 1 site in United States.
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 8 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 28 Jan 2020. 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 United States. 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?
NIH Toolbox Scores (time frame: Baseline). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 28 Jan 2020.