Effects of tDCS in M1 and DLPFC on Pain Processing in Healthy Volunteers

October 28, 2020 updated by: Josue Fernandez Carnero, Universidad Rey Juan Carlos

Effects of Transcranial Direct Current Stimulation on Primary Cortex and Prefrontal Dorsolateral Cortex in Pain Processing on Healthy Volunteers: A Triple Blind Randomized Controlled Trial.

The purpose of this study is to evaluate the effects of a direct current applied transcranial over two cortical areas on healthy volunteers' pain processing.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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

  • Spain
    • Madrid
      • Alcorcon, Madrid, Spain, 28922
        • Universidad Rey Juan Carlos

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 40 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age between 18 and 40 years
  • Comprehension of the study tasks

Exclusion Criteria:

  • Presence of pain in the previous 6 months
  • Altered sensitivity in the tested regions
  • Intolerance to electrotherapy
  • Presence of pacemakers or any other implanted device
  • Ulcers or scars in the skin at the location of the electrodes
  • Treatment with direct current stimulation within one week
  • Pregnancy
  • Frequent headaches
  • Epilepsy
  • History of neuromuscular disease
  • Previous clinical history of cervical surgery
  • Injuries or surgery affecting the upper limb
  • diabetes mellitus
  • Cardiovascular diseases
  • Oncological diseases
  • Consumption of analgesic drugs 7 days before the study

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 Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: M1 stimulation
A 20 minutes 1mA direct current stimulation over left M1.
Device: Transcranial direct current stimulation
Direct current application over the scalp to stimulate and change the excitability of the cortical areas underneath the electrodes (in this case left primary motor cortex and left dorsolateral prefrontal cortex).
Active Comparator: M1+DLPFC stimulation
A 20 minutes 1mA direct current stimulation over left M1 and 1mA direct current stimulation over left DLPFC.
Device: Transcranial direct current stimulation
Direct current application over the scalp to stimulate and change the excitability of the cortical areas underneath the electrodes (in this case left primary motor cortex and left dorsolateral prefrontal cortex).
Sham Comparator: Sham stimulation
A 20 minutes sham stimulation where the device only is working first 30s and last 30s of the intervention and have a 10 seconds fade out in intensity at each ramp.
Device: Transcranial direct current stimulation
Direct current application over the scalp to stimulate and change the excitability of the cortical areas underneath the electrodes (in this case left primary motor cortex and left dorsolateral prefrontal cortex).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Conditioned Pain Modulation
Time Frame: Pre-intervention and immediately after treatment
Pain pressure threshold change after a painful ischemic stimulus
Pre-intervention and immediately after treatment
Pain pressure algometer temporal summation
Time Frame: Pre-intervention and immediately after treatment
Change in pain perceived between the first and tenth painful pressure stimulus
Pre-intervention and immediately after treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pain pressure threshold
Time Frame: Pre-intervention and immediately after treatment
Measurement of pressure applied until the perception of pain
Pre-intervention and immediately after treatment
Pain pressure tolerance
Time Frame: Pre-intervention and immediately after treatment
Measurement of maximal painful pressure tolerate using a pressure algometer
Pre-intervention and immediately after treatment
Neural mechanosensitivity
Time Frame: Pre-intervention and immediately after treatment
Measurement of range of motion achieved until the perception of tension
Pre-intervention and immediately after treatment
Cold hyperalgesia with a cold pack
Time Frame: Pre-intervention and immediately after treatment
Pain rated in a visual analogue scale after 10 seconds of a cold stimulus
Pre-intervention and immediately after treatment
Isometric grip strength
Time Frame: Pre-intervention and immediately after treatment
Maximal pressure achieved in a isometric gripping task
Pre-intervention and immediately after treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Universidad Rey Juan Carlos

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Josue Fernandez Carnero, PhD, Rey Juan Carlos University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 6, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 25, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 25, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 9, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 12, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 16, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 30, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 28, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2020

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 30012020204820

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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