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Motor Imagery in Aphantasia

RecruitingNAAges 18 Years - anyAllHôpital le Vinatier
NCT06140940 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

The present study aims to characterize and modulate motor imagery abilities in individuals with aphantasia. The investigators will characterize the neurophysiological and physiological underpinnings of mental imagery abilities in participants with aphantasia by investigating several indices of motor imagery abilities and comparing them to participants with typical mental imagery abilities. The investigators will investigate whether non-invasive brain stimulation applied to the primary motor cortex improves mental imagery abilities in participants with aphantasia.

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📋 Eligibility rules (as published)
Inclusion Criteria: * For the aphantasia group only: congenital aphantasia defined as a life-long inability to generate mental imagery (confirmed by a total score of 32 or less on the VVIQ, which is the gold standard questionnaire for aphantasia) * For the no-aphantasia group only: typical mental imagery capacities (confirmed by a total score of more than 32 on the VVIQ) * Covered by public health insurance * Understanding the French language * Signed written informed consent after being informed about the study Exclusion Criteria: * Presence or history of a somatic, neurologic, or mental illness * Actual pain or musculoskeletal disorders at the upper limb * Having a regular musical activity (more than once a week) because of high manual dexterity * Contraindication for noninvasive brain stimulation including the presence of ferromagnetic or magnetic sensitive metal objects implanted in the head or in close proximity (e.g., brain stent, clip, cochlear implants, or stimulator) * Pregnancy (controlled by urine pregnancy test in females without reported contraception) * Active seizure disorder or history of seizures * Participants under curatorship/guardianship
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What it tests

  • High-definition transcranial direct current (HD-tDCS), active condition
  • High-definition transcranial direct current (HD-tDCS), sham condition
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Where

1 site
Centre Hospitalier le Vinatier
Bron, France
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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