The Visuo-attentional Mediator of Social Facilitation

Study Overview
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Brief Summary
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Social psychology has long established that the mere presence of others influences the investigator's individual behavior and performance. Social facilitation refers to any improvement or deterioration of performance due to the presence of others. For more than a century, social psychology has acquired a solid knowledge of the principles governing this fundamental form of social influence. But the underlying mechanism of social facilitation remains debated, as behavior alone cannot identify it with certainty. This major unresolved problem makes it particularly difficult to translate laboratory results on social facilitation into real applications in areas such as school or work, where others are ubiquitous. The purpose of this study will therefore be to identify the mediator of social facilitation.

Official Title
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The Visuo-attentional Mediator of Social Facilitation

Conditions
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Social Facilitation

Intervention / Treatment
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* Behavioral: Social Facilitation


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 35 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Social Facilitation<br>Cognitive tasks during the 2 functional Magnetic Resonance Imaging (fMRI) observed or not by a subject's known peer. | Behavioral: Social Facilitation<br>* During the functional Magnetic Resonance Imaging (fMRI) scans, the subject will perform cognitive tasks measuring eye movements and attention alternatively observed by a familiar peer (in an adjacent room) or not.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Brain activation | Cerebral Blood Oxygenation Level-Dependent (BOLD) signals | 50 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Behavioral performances | pupillary diameter | 50 minutes | 
| Behavioral performances | error rate | 50 minutes | 
| Behavioral performances | reaction time | 50 minutes | 
| Behavioral performances | oculomotor kinematic parameters: velocity of saccades. | 50 minutes | 
| Behavioral performances | oculomotor kinematic parameters: duration of saccades. | 50 minutes | 
| Behavioral performances | oculomotor kinematic parameters: precision of saccades. | 50 minutes | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Functional Magnetic Resonance Imaging (fMRI), Healthy Subjects