Mobile phone use restriction and PET imaging of dopamine transporter

Is this trial a fit for you?

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

What this trial studies

Healthy adults who regularly use mobile phones will undergo two weeks of phone restriction followed by PET scans to measure dopamine transporter binding, with a crossover period of free phone use and a second PET scan. The study uses the Screentime app to enforce and monitor restriction. PET imaging will assess changes in dopamine transporter binding related to the intervention. Participants must be able to undergo PET scanning and adhere to the two-week restriction, within a single-location setting at Pusan National University Hospital in Busan. No neuropsychiatric disorders or mental-health medications are permitted, and participation spans about four weeks in total.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Healthy subjects with daily use of mobile phone (IPhone)
* Accessible with "Screentime" application

Exclusion Criteria:

* Neuropsychiatric disease
* Subjects who have medications for mental illness
* Subjects who cannot undergo PET scans
* Subjects who cannot participate 4 weeks of this study

Where it's running

• Pusan National University Hospital
  Busan, Busan, South Korea Recruiting

Study contacts

• Study coordinator: Kyoungjune Pak, MD, PhD
• Email: ilikechopin@pusan.ac.kr
• Phone: +82-51-240-7389

Similar studies

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

• Vocal Signals of Craving in Addiction

  Researchers will see if voice patterns can signal craving in adults with addictions by having them perform voice tasks and report their cravings in real time.

  Recruiting University of Bordeaux · Bordeaux · NCT07878624

• Impact of GLP-1 Receptor Agonist Therapy vs Structured Lifestyle on Weight and Health

  This study tests whether starting a GLP-1 receptor agonist for weight loss works differently from a structured diet-and-exercise program in improving heart and metabolic health for adults with overweight or obesity.

  Recruiting Texas Tech University · Lubbock, Texas · NCT07740291

• Craving and addiction severity: how craving links to changing levels of addiction in daily life

  This observational study tests whether craving and the way different addiction symptoms interact can predict changes in addiction severity over two years for adults with substance use disorders.

  Recruiting University of Bordeaux · Bordeaux · NCT07734363

• STAR Project: Supporting Recovery for People with Criminal Legal System Involvement

  A new coaching program tests whether paired Recovery Coach and Loved One Coach sessions help people in recovery from substance use and their supporters see better recovery outcomes.

  Recruiting University of Kentucky · Lexington, Kentucky · NCT07596251

• NLP-based weekly writings to track mood and worry during residential rehab for SUD

  This study tests whether weekly Spanish narratives and biweekly questionnaires can reveal patterns of mood and thoughts that relate to recovery in adults with substance use disorders in a Mexican rehab center.

  Recruiting Under The Tree Therapeutic Community · Potrerillos, Jalisco · NCT07595614

• Comparative evaluation of nicotine analogs for nicotine EC users

  This early-stage trial tests whether two nicotine-like compounds (6-MN and nicotinamide) differ from nicotine in how they feel, how much people use them, and how they affect the body in adult e-cigarette users.

  Recruiting Phase 1 Ohio State University Comprehensive Cancer Center · Columbus, Ohio · NCT07585006

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.