NCT05354232

Brief Summary

The investigators are investigating whether home-based tDCS over the course of four weeks can improve ADHD symptom severity and improve dysexecutive functioning (cognitive control). Further, the investigators are investigating whether there is a dose-dependent response to tDCS.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Jul 2022

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 7, 2022

Completed
22 days until next milestone

First Posted

Study publicly available on registry

April 29, 2022

Completed
2 months until next milestone

Study Start

First participant enrolled

July 1, 2022

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2026

Completed
Last Updated

December 12, 2025

Status Verified

December 1, 2025

Enrollment Period

3.8 years

First QC Date

April 7, 2022

Last Update Submit

December 5, 2025

Conditions

Outcome Measures

Primary Outcomes (3)

  • P300 Amplitude during Erickson Flanker Task

    P300, an electrophysiological feature theorized to represent executive functioning, has been previously shown to be notably diminished during the Erickson Flanker Task (EFT) . We will be administering this task to assess changes in P300 during the EFT, and if any changes are related to subjects' assigned condition.

    Week 1 - Week 8 of Study

  • Global Assessment of Functioning (GAF) Scale

    investigators will use GAF scale to assess the potential feasibility of at-home tDCS for future research.

    Week 1 - Week 8 of Study

  • Adult ADHD Self-Report Scale

    Investigators will assess changes to these questionnaires in reference to assigned stimulation group to assess changes to ADHD symptomatology across study duration.

    Week 1 - Week 8 of Study

Study Arms (3)

2mA transcranial direct current stimulation

EXPERIMENTAL
Device: 2 mA transcranial direct current stimulation (tDCS)

1mA transcranial direct current stimulation

EXPERIMENTAL
Device: 1 mA transcranial direct current stimulation (tDCS)

Sham transcranial direct current stimulation

SHAM COMPARATOR
Device: Sham transcranial direct current stimulation (tDCS)

Interventions

tDCS is a non-invasive neuromodulatory technique that has previously demonstrated the ability to transiently modulate cognitive domains in both healthy and psychiatric populations. In the 2mA condition, the investigators will assist the administration of a 2mA current stimulation from the device.

2mA transcranial direct current stimulation

tDCS is a non-invasive neuromodulatory technique that has previously demonstrated the ability to transiently modulate cognitive domains in both healthy and psychiatric populations. In the 1mA condition, the investigators will assist the administration of a 1mA current stimulation from the device.

1mA transcranial direct current stimulation

tDCS is a non-invasive neuromodulatory technique that has previously demonstrated the ability to transiently modulate cognitive domains in both healthy and psychiatric populations. In the sham condition, the investigators will assist the administration of a sham stimulation from the device.

Sham transcranial direct current stimulation

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Male and female outpatients 18-65 years of age
  • A diagnosis of ADD/ADHD or meeting the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria.

You may not qualify if:

  • Contraindication to tDCS: history or epilepsy, metallic implants in the head and neck, brain stimulators, vagus nerve stimulators, VP shunt, pacemakers, pregnancy.
  • Active substance dependence (except for tobacco).
  • Pregnant or nursing females.
  • Inability to participate in testing procedures.
  • Premorbid neurological conditions (including neurovascular and neurodegenerative diseases such as traumatic brain injury, stroke, Parkinson's, AD and other dementias) and severe psychiatric disorders (bipolar disorder, schizophrenia).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Massachusetts General Hospital

Charlestown, Massachusetts, 02129, United States

RECRUITING

Related Publications (1)

  • Dubreuil-Vall L, Ruffini G, Camprodon JA. Deep Learning Convolutional Neural Networks Discriminate Adult ADHD From Healthy Individuals on the Basis of Event-Related Spectral EEG. Front Neurosci. 2020 Apr 9;14:251. doi: 10.3389/fnins.2020.00251. eCollection 2020.

    PMID: 32327965BACKGROUND

MeSH Terms

Conditions

Attention Deficit Disorder with Hyperactivity

Condition Hierarchy (Ancestors)

Attention Deficit and Disruptive Behavior DisordersNeurodevelopmental DisordersMental Disorders

Study Officials

  • Joan Camprodon, MD, PHD, MPH

    MGB: Division of Neuropsychiatry and Neuromodulation

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Soterix devices allow for effective and automated double-blinding.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Subjects will be randomized during the first study visit to the 2mA, 1mA, or sham conditions. Subjects will not change dose throughout study.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Division Chief - Neuropsychiatry & Neuromodulation

Study Record Dates

First Submitted

April 7, 2022

First Posted

April 29, 2022

Study Start

July 1, 2022

Primary Completion

May 1, 2026

Study Completion

May 1, 2026

Last Updated

December 12, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share

There is no plan to make IPD for the current study available to other researchers.

Locations