Brain scans reveal how ADHD affects impulse control
NCT ID NCT04768556
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at brain activity in adults with ADHD while they performed tasks that required stopping an action. Researchers used EEG to measure electrical signals in the brain. The goal was to understand the brain processes behind impulse control problems in ADHD. No treatment was given.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help researchers better understand how the brain controls impulses in ADHD, potentially guiding future treatments.
- What could go wrong
- This is an observational study with only 45 participants, so results may not apply to everyone with ADHD. It does not test any treatment or intervention.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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45 people
The number who actually took part.
- Started
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Mar 2021
- Finished
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Jul 2023
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 18 and 50, * Visual, auditory (authorized apparatus), motor skills suitable for the proper realization of neuropsychological tests, * Being right-handed, * Free, informed and written consent signed by the participant and the investigator * Person affiliated or beneficiary of a social security scheme. * For the ADHD group: * Diagnosis of ADHD according to DSM-V criteria (APA, 2013), For the patient control group: • Patient who consulted for a cognitive complaint and for whom the diagnosis of ADHD was rejected according to the criteria of DSM-V (APA, 2013). Exclusion Criteria: * General or progressive neurological disease resulting in cognitive impairment (multiple sclerosis, Parkinson's disease, stroke, etc.), * Insufficient linguistic level in French to participate in neuropsychological assessment, * Patient placed under judicial protection or under another protective regime, * Severe depression according to DSM-V criteria (APA, 2013), * Autism spectrum disorder, developmental coordination disorder. -For the healthy voluntary control group: * Presence of a cognitive complaint or pathology which may impair his cognitive functions
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Toulouse Purpan University Hospital
Toulouse, 31000, France
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