Mind's eye mystery: brain scans reveal how aphantasics imagine actions
NCT ID NCT07630324
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at brain activity in people with aphantasia, a condition where someone cannot form mental images. Researchers will use MEG scans to compare brain patterns during tasks like imagining movements or preparing to move. The goal is to understand how the brain handles these 'covert actions' in people with and without aphantasia.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 60 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Aged 18 to 60 years * Willing to actively participate in the study * Having signed an informed consent form to participate in the study Inclusion Failure Criteria: Identification of individuals with and without aphantasia based on responses to a questionnaire validated in the literature: Vividness of Movement Imagery Questionnaire, second version (VMIQ-2): Scores required for inclusion in the aphantasic group * VMIQ-2: internal visual imagery score = 55-60 * VMIQ-2: kinesthetic imagery score = 55-60 Scores required for inclusion in the non-aphantasic group * VMIQ-2: internal visual imagery score = 20-36 * VMIQ-2: kinesthetic imagery score = 20-36 Exclusion Criteria: * Neurological or psychiatric disorders * History of neurological or psychiatric disorders * Sleep disorders that may affect data variability or quality, or participant cooperation and retention, as assessed by the principal investigator or co-investigator during the inclusion interview * Volunteers presenting standard contraindications to MEG and MRI examinations: * Presence of incompatible metal in the body (pacemaker, implanted pump including insulin pump, neurostimulator, cochlear implants or other hearing devices, metallic prosthesis, intracerebral/surgical aneurysm clips, implantable defibrillator, ferromagnetic foreign bodies in the eyes or brain in the upper body, ventriculoperitoneal shunt valves, dental braces or steel posts in root canals, ferromagnetic foreign bodies in the upper body) * Claustrophobia * Pregnant or breastfeeding women * Individuals under guardianship, curatorship, or legal protection * Individuals deprived of liberty * Individuals undergoing psychiatric care * Individuals admitted to a health or social institution for reasons other than clinical research * Individuals not affiliated with a social security system or not beneficiaries of such a system
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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CERMEP
Bron, France