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

NCT ID: NCT04300946

Last Updated: 2025-08-03

Basic Information

• Recruitment Status: RECRUITING
• Total Enrollment: 48 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2021-10-10
• Study Completion Date: 2025-10-01

Brief Summary

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

Conditions

Schizophrenia

Study Design

• Observational Model Type: OTHER
• Study Time Perspective: OTHER

Study Groups

TMS on the cerebellum followed by placebo TMS

TMS preceding the time prediction and language tests

TMS targeted on the cerebellum

Intervention Type: 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.

Placebo TMS followed by TMS on the cerebellum

TMS preceding the time prediction and language tests

TMS targeted on the cerebellum

Intervention Type: 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.

TMS on the cerebellum set in time on waiting periods

TMS targeted on the cerebellum

Intervention Type: 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.

TMS on the cerebellum not set in time on waiting periods

TMS targeted on the cerebellum

Intervention Type: 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.

Interventions

TMS targeted on the cerebellum

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.

Intervention Type: DEVICE

Eligibility Criteria

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).

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University Hospital, Strasbourg, France

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

CHU Strasbourg

Strasbourg, , France

Site Status: RECRUITING

Countries

France

Central Contacts

Anne Giersch

Role: CONTACT

giersch@unistra.fr

000333 ext. 88 11 64 71

Facility Contacts

Anne Giersch

Role: primary

Other Identifiers

7650

Identifier Type: -

Identifier Source: org_study_id