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Completed

NCT Number: NCT03929289

The Visuo-attentional Mediator of Social Facilitation

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.

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Key information

Conditions

Social Facilitation Behavior Social Behavior

Age range

18 year–35 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Centre de Recherche en Neuroscience de Lyon

Bron, 69500, France

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Social Facilitation

Behavioral

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.

Primary outcomes

  1. Brain activation

    Time frame: 50 minutes

    Cerebral Blood Oxygenation Level-Dependent (BOLD) signals

Secondary outcomes

  1. Behavioral performances

    Time frame: 50 minutes

    pupillary diameter

  2. Behavioral performances

    Time frame: 50 minutes

    error rate

  3. Behavioral performances

    Time frame: 50 minutes

    reaction time

  4. Behavioral performances

    Time frame: 50 minutes

    oculomotor kinematic parameters: velocity of saccades.

  5. Behavioral performances

    Time frame: 50 minutes

    oculomotor kinematic parameters: duration of saccades.

  6. Behavioral performances

    Time frame: 50 minutes

    oculomotor kinematic parameters: precision of saccades.

Sponsors and collaborators

Lead sponsor

Hospices Civils de Lyon

Other

Registry information

Acronym: VAMOS

Important dates

Study start
2021
Primary completion
2022
Study completion
2022
First posted
Apr 26, 2019
Registry last updated
Sep 3, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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