Clinical Research Directory

Inclusion Criteria: 1. Healthy volunteer attending the neurovascular department of Raymond-Poincaré Hospital 2. Aged between 20 and 89 years 3. Affiliated with a health insurance scheme 4. French-speaking 5. Has freely and knowingly expressed their non-opposition Exclusion Criteria: 1. Known history of central neurological disease: stroke (ischemic or hemorrhagic), transient ischemic attack, encephalitis, multiple sclerosis, or epilepsy. 2. Medical interview suggesting past central nervous system involvement: history of episodes such as sensorimotor deficits, dysarthria, aphasia, blurred or double vision, or positive symptoms such as visual or sensory hallucinations (e.g., paresthesias). 3. Significant visual impairment - as judged by the examiner - in near vision despite correction, or monocular blindness. Specifically, inability to distinguish the targets with gaps in the example (pre-test) of the Apples Cancellation Test. 4. Abnormal neurological examination: 1. National Institutes of Health Stroke Scale (NIHSS) score \> 0 2. Pyramidal reflex syndrome (hyperactive deep tendon reflexes with extended reflexogenic zones and spread). 5. Use of substances (alcohol or drugs) within 24 hours prior to the assessment. 6. Presence of cognitive or psychiatric disorders, assessed during the inclusion interview and neurological examination, at the examiner's discretion. 7. Language barrier or aphasia, assessed during the inclusion interview and neurological examination, at the examiner's discretion. 8. Participant under legal protection (guardianship, curatorship, or legal safeguard).