- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03293316
Using Electroencephalography (EEG) and Transcranial Current Stimulation (tCS) to Study and Modulate Cognition Study
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Inter-individual variability in responsiveness to interventions poses great challenges for translational neuroscience, and health care in general. Reliable and cost- effective screening procedures that can identify individuals who are more likely to benefit from an intervention could have substantial real-world benefits. Here, the investigators sought to examine the potential for high-frequency transcranial random noise stimulation (tRNS) to modulate sustained attention in a manner that was informed by individual differences in a well-studied electrocortical marker, spontaneous theta/beta ratio. The investigators hypothesized that individuals with relatively high theta/beta ratios, putatively reflecting suboptimal cortical arousal, would be more likely to benefit from the gains in cortical excitability afforded by tRNS. Seventy-two young healthy adults were administered 1mA, 2mA and sham tRNS in a double-blind, randomised, cross-over manner, while they performed a continuous monitoring paradigm. Electroencephalography was acquired before and after each stimulation condition.
This approach may constitute a feasible means of using individual differences in neurophysiology to inform predictions about outcomes from targeted cognitive interventions.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion criteria:
- Aged 18-35 years
Exclusion criteria:
- Left-handedness
- Visual impairment
- History of fainting,
- History of neurological or psychiatric illness,
- Neurological insult
- Drug or alcohol abuse
- Reporting current use of anti- psychotic or anti-depressant medications
Study Plan
How is the study designed?
Design Details
- Primary Purpose: BASIC_SCIENCE
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: DOUBLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
SHAM_COMPARATOR: Sham Transcranial Random Noise Stimulation
The sham tRNS condition involves 30 seconds of 1.5 mA tRNS, with a ramping period of 30 seconds at the onset and offset.
This procedure ensures that, in both the Active and Sham conditions, participants experience the sensations associated with the onset of transcranial electrical stimulation (e.g., tingling sensation)
|
The transcranial random noise stimulation was delivered using a StarStim device (Neuroelectrics®, Barcelona, Spain).
The electrodes were encased in a pair of saline-soaked sponges (25 cm2 ), and were secured within a Neurolectrics EEG cap over right DLPFC (F4) and right IPL (P4), according to the 10-20 international EEG system.
Other details are stated under the 'intervention arm' descriptions.
Other Names:
|
EXPERIMENTAL: 1mA Transcranial Random Noise Stimulation
The 1mA tRNS condition consists of 1 mA peak-to-peak (-.5 mA to .5 mA) high frequency noise (100-500 Hz), with amplitude values that are normally distributed and have a mean of zero.
The stimulation is delivered for 20 minutes, with a ramping period of 30 seconds at the onset and offset.
|
The transcranial random noise stimulation was delivered using a StarStim device (Neuroelectrics®, Barcelona, Spain).
The electrodes were encased in a pair of saline-soaked sponges (25 cm2 ), and were secured within a Neurolectrics EEG cap over right DLPFC (F4) and right IPL (P4), according to the 10-20 international EEG system.
Other details are stated under the 'intervention arm' descriptions.
Other Names:
|
EXPERIMENTAL: 2mA Transcranial Random Noise Stimulation
The only factor that varies for the 2mA tRNS condition is that the high frequency noise has a peak-to-peak of -1 mA to 1mA as opposed to -.5 mA to .5 mA.
Again, the stimulation is delivered for 20 minutes, with a ramping period of 30 seconds at the onset and offset.
|
The transcranial random noise stimulation was delivered using a StarStim device (Neuroelectrics®, Barcelona, Spain).
The electrodes were encased in a pair of saline-soaked sponges (25 cm2 ), and were secured within a Neurolectrics EEG cap over right DLPFC (F4) and right IPL (P4), according to the 10-20 international EEG system.
Other details are stated under the 'intervention arm' descriptions.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Electroencephalography
Time Frame: 4 minutes
|
Voltage readings from the scalp
|
4 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Sustained Attention performance
Time Frame: 20 minutes
|
Sustained Attention performance was defined as response time variability on a continuous monitoring paradigm
|
20 minutes
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- C2-2014-033
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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