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NCT Number: NCT04300946

Time Prediction and Cerebellum: Magnetic Transcranial Stimulation (TMS) in Healthy Volunteers

The aim of the study is to check the role of the cerebellum in time prediction in healthy volunteers, by means of magnetic transcranial stimulation targeted on the cerebellum, and recording of behavioural measures indexing time prediction

Recruiting

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Key information

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Observational

Primary location

CHU Strasbourg

Strasbourg, France

Location status: Recruiting

Location contact

Anne Giersch

CONTACT

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Participant, male or female, between 18 and 60 years old
  • Subject affiliated to a social health insurance scheme (beneficiary or entitled person)
  • Subject who has dated and signed an informed consent form
  • For a woman of childbearing age, negative pregnancy test and effective contraception throughout the study

Exclusion criteria

  • - Participant with substance use disorders (as defined by DSM-V)
  • Participants taking benzodiazepines and related substances (in the period before inclusion, for a duration equivalent to 5 half-lives of the product), cannabis (in the 2 months before inclusion) or hallucinogenic substances (in the period before inclusion, for a duration equivalent to 5 half-lives of the product).
  • Participant with neurological pathology or sequelae
  • Participant with Attention Deficit Hyperactivity Disorder (ADHD)
  • Participant with a borderline personality disorder
  • Participant with disabling sensory impairments, including visual acuity (corrected, if applicable) < 0.8 (due to use of visual material) (Freiburg Vision Test, Bach 1996)
  • Participant deprived of liberty or subject to the safeguard of justice
  • Participant under guardianship or curatorship
  • Participant in a period of exclusion defined by another clinical study or participant in a study that may impact on research results
  • Pregnant or breastfeeding woman
  • Subject with a contraindication to performing an MRI or TMS: presence of non-removable ferromagnetic body, prosthesis, pacemaker, medication delivered by an implanted pump, vascular clip or stent, heart valve or ventricular lead, certain intracerebral clips, cochlear implants, history of epilepsy, skin pathology at the point of contact with the electrodes.
  • Subject with a history of major neurological or psychiatric illness with current psychotropic medication (i.e., antidepressant, thyroid regulator, antipsychotic, benzodiazepine and related drugs, or hypnotic).

Treatment and study plan

TMS targeted on the cerebellum

Device

Impact on EEG performance (preparation wave in temporal tasks) of cerebellar stimulation by MSD in healthy subjects. The contrast between the post-stimulation effects of verrum stimulation and placebo stimulation will indicate the magnitude of the effect and will allow us to optimize the type of protocol that may be useful in schizophrenia.

Primary outcomes

  1. EEG index of time expectation

    Time frame: 40 minutes

    CNV

  2. EEG index of time expectation

    Time frame: 40 minutes

    beta oscillation

Study contacts

Contact information is provided by the study sponsor or research team.

Anne Giersch

CONTACT

[email protected]

000333 ext. 88 11 64 71

Sponsors and collaborators

Lead sponsor

University Hospital, Strasbourg, France

Other

Registry information

Official study title

Effects of the Magnetic Transcranial Stimulation (TMS) in Healthy Volunteers

Important dates

Study start
2021
Primary completion
2025
Study completion
2025
First posted
Mar 9, 2020
Registry last updated
Aug 3, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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