Clinical trial Recruiting at 1 site Observational Ages 6 to 17

Medication effects on eye movements and autonomic function in children and teens with ADHD

Official title: Evaluation of the Relationship Between Medication, Eye Movements, and Autonomic Nervous System Functions in Children and Adolescents With ADHD

Run by Umeå University · NCT07634809 · Data updated 2026-11-12

This study tests how ADHD medication influences eye movements and autonomic nervous system signals in kids and teens with ADHD.

Quick facts

Study typeObservational
Ages6 Years to 17 Years
SexAll
Enrollment150 (estimated)
SponsorUmeå University
Academic / other
Locations1 site (Umeå)
StatusRecruiting
StartedApril 10, 2026
Main results expectedNovember 2028
Study endsNovember 2028
Registry record updatedJune 9, 2026
Trial IDNCT07634809 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Children and adolescents aged 6–17 with ADHD who are planned to receive methylphenidate according to clinic procedures and can participate in eye-tracking and HRV assessments.

Probably not a fit

Individuals with cardiovascular conditions, severe motor or visual impairments, or recent caffeine intake that cannot be controlled may not benefit from the findings.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study examines how methylphenidate affects biomarkers such as eye movements, pupil dilation, pupillary light reflex, and heart rate variability in children and adolescents with ADHD. It uses a quasi-experimental pretest–posttest design to explore associations between symptom changes, medication, and these biomarkers. The goal is to better understand which factors relate to symptom improvement and side effects, potentially guiding individualized treatment decisions. Participants are 6 to 17 years old and receive ADHD medication under clinical procedures, with measurements taken during specified time windows and excluding individuals with certain health conditions or measurement barriers. The research is conducted at multiple sites in Sweden, led by Umeå University with collaboration from regional and university partners.

Why it matters

Potential benefit: If successful, findings could help tailor ADHD medication choices and monitoring to individual biomarker profiles, potentially improving response and reducing side effects.

How similar studies have gone: Similar approaches have shown associations between medications and physiological biomarkers, but this study adds a focused look at eye movements and autonomic measures in a pediatric ADHD population.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ages of 6 -17
* diagnosis of ADHD and agreed to medication administration in accordance with the clinic's procedures.

Exclusion Criteria:

* diagnoses of arrhythmia, cardiovascular disease, or current substance use
* concurrent use of non-steroidal asthma medications or beta-blockers
* the inability to complete study participation before the participant's 18th birthday.
* severe motor impairments and visual impairments that prevent participation in eye-tracking measurements.
* caffeine intake within 4 hours prior to HRV and eye-tracking measurements

Where it's running

  • BUP Umeå
    Umeå, Sweden
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.