tES Modalities for the Treatment of ADHD

August 2, 2026 updated by: Mohammad Ali Salehinejad, The National Brain Mapping Laboratory (NBML)

Transcranial Electrical Stimulation Modalities for the Treatment of Clinical Symptoms and Cognitive Deficits in Attention-deficit Hyperactivity Disorder Disorder

This project investigates the efficacy of transcranial electrical stimulation (tES) modalities, specifically transcranial direct current stimulation (tDCS) and transcranial alternating current stimulation (tACS), for treating Attention-Deficit/Hyperactivity Disorder (ADHD) in children and adolescents.

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.

Detailed Description

This project aims to evaluate the therapeutic potential of transcranial electrical stimulation (tES) modalities, specifically transcranial direct current stimulation (tDCS) and transcranial alternating current stimulation (tACS), as innovative, non-invasive interventions for managing Attention-Deficit/Hyperactivity Disorder (ADHD) in children and adolescents. ADHD is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity that impair daily functioning. Conventional treatments, such as pharmacological interventions and behavioral therapies, may have limitations, including side effects or variable efficacy, prompting the exploration of neuromodulation techniques like tES.

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.
45

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 Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Iran
      • Tehran, Iran
        • Institute for Research in Fundamental Sciences

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

  • Child
  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Diagnosis of ADHD by a licensed psychiatrist and a behavioral checklist
  • being 7-18 years old
  • providing written informed consent signed by parents

Exclusion Criteria:

  • comorbidity with other neurodevelopmental disorders
  • Comorbidity with other neurological disorders
  • previous history of neurosurgery
  • Presence of any ferromagnetic metal in the head
  • implanted medical devices in the head or neck region
  • history of non-controlled epilepsy with seizures in the last year

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: Parallel Assignment
  • Masking: Triple

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: active tDCS group
This group receives Transcranial Direct Current Stimulation (tDCS). tDCS delivers a constant, low-intensity direct current (typically 1-2 mA) through electrodes placed on the scalp. The anode (positive electrode) increases cortical excitability by depolarizing neurons, while the cathode (negative electrode) decreases excitability by hyperpolarizing neurons.
Device: transcranial electrical stimulation
Transcranial electrical stimulation (tES) is a non-invasive neuromodulation technique that applies low-intensity electrical currents to the scalp to modulate brain activity. It targets specific brain regions to influence neuronal excitability, connectivity, and plasticity, offering potential therapeutic benefits for neurological and psychiatric conditions. tES is portable, cost-effective, and generally well-tolerated, with minimal side effects such as mild tingling or itching at the stimulation site.
Other Names:
  • tDCS
  • tACS
Active Comparator: active tACS group
This group receives Transcranial Alternating Current Stimulation (tACS). tACS applies an oscillating current at specific frequencies (e.g., 1-100 Hz) to entrain or synchronize neural oscillations. By aligning the stimulation frequency with endogenous brain rhythms (e.g., theta or gamma bands), tACS can modulate network dynamics, potentially normalizing aberrant oscillatory patterns associated with disorders like ADHD.
Device: transcranial electrical stimulation
Transcranial electrical stimulation (tES) is a non-invasive neuromodulation technique that applies low-intensity electrical currents to the scalp to modulate brain activity. It targets specific brain regions to influence neuronal excitability, connectivity, and plasticity, offering potential therapeutic benefits for neurological and psychiatric conditions. tES is portable, cost-effective, and generally well-tolerated, with minimal side effects such as mild tingling or itching at the stimulation site.
Other Names:
  • tDCS
  • tACS
Placebo Comparator: sham group
This group receives sham stimulation. The stimulation duration is for 1 minuetand the device will be turned off after the stimulation
Device: transcranial electrical stimulation
Transcranial electrical stimulation (tES) is a non-invasive neuromodulation technique that applies low-intensity electrical currents to the scalp to modulate brain activity. It targets specific brain regions to influence neuronal excitability, connectivity, and plasticity, offering potential therapeutic benefits for neurological and psychiatric conditions. tES is portable, cost-effective, and generally well-tolerated, with minimal side effects such as mild tingling or itching at the stimulation site.
Other Names:
  • tDCS
  • tACS

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
ADHD symptoms- Clinical rating scale
Time Frame: Baseline, week 2, up to 1 month after the intervention
ADHD symptoms will be assessed using a DSM-based structured interview. This approach involves a systematic, standardized method to evaluate the presence and severity of ADHD symptoms based on the diagnostic criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM), likely the DSM-5, which is widely used for diagnosing ADHD.
Baseline, week 2, up to 1 month after the intervention

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
Executive function- Performance accuracy and reaction time
Time Frame: Baseline, week 2, up to 1 month after the intervention
Performance in an executive functions computerized task
Baseline, week 2, up to 1 month after the intervention
electroencephalogram (EEG) power
Time Frame: Baseline, week 2
Change in the EEG alpha/theta/gamma power
Baseline, week 2
electroencephalogram (EEG) functional connectivity
Time Frame: Baseline, week 2
Baseline, week 2

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.
The National Brain Mapping Laboratory (NBML)

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
RWTH Aachen University
Institute for Research in Fundamental Sciences

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.
March 30, 2025

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.
March 1, 2026

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.
May 1, 2026

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).
April 30, 2025

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.
May 8, 2025

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.
May 15, 2025

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.
August 4, 2026

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.
August 2, 2026

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.
August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • IPM-NDD

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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