The Visuo-attentional Mediator of Social Facilitation

Inclusion Criteria: * Male or female * Aged 18 to 35 years old * Signed written informed consent * Insurance coverage Exclusion Criteria: * Neurological or psychiatric or ophthalmological disorder * Non-stabilized medical condition * Ongoing treatment with drugs that affect the central nervous system * Uncorrected visual inadequacy * No fluency in French reading * Pregnant and / or breastfeeding woman, this exclusion criterion will be sought by questioning the subject * Subject commonly in care in a health or social facility for purposes other than that of research * Subject under guardianship * Subject deprived of liberty by a judicial or administrative decision * Incompatibility with the Magnetic Resonance Imaging (MRI) examination determined by answering the following questions: * Carrier of a neurological stimulator, cardiac (battery) or defibrillator * Carrier of a cardiac prosthesis (valve, stent ...) or vascular * Holder of intracranial clips or clamps (staples) * Carrier of a cerebrospinal fluid bypass * Presence of metal chips in the eyes * Metal prosthesis carrier (teeth, knees) * Pump carrier or infusion system * Presence of metal tattoo near the head * Presence of permanent makeup * Claustrophobia or respiratory disorders