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Magnetoencephalography (MEG), Attention and Conscience

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified May 2012 by Institut National de la Santé Et de la Recherche Médicale, France.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Institut National de la Santé Et de la Recherche Médicale, France Identifier:
First received: April 16, 2012
Last updated: May 3, 2012
Last verified: May 2012

The tight relationship between attention and conscious perception makes them difficult to study in isolation and has led many scientists to closely link these two processes. However, while some authors argue that conscious perception cannot occurs without attention, magnetoencephalography (MEG) and fMRI studies had shown that attention and consciousness are two distinct brain processes.

If endogenously triggered attention and consciousness are dissociated, it has been proposed that orienting of exogenous attention is a necessary, though not sufficient, antecedent of conscious perception.

In the present study we used MEG to explore the neural correlates of exogenous attention and consciousness during visual processing.

Change in Sustained Attention
Reaction Time

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: Spatio-temporal Dynamic of the Relationship Between Spatial Attention and Visual Awareness

Further study details as provided by Institut National de la Santé Et de la Recherche Médicale, France:

Primary Outcome Measures:
  • Brain activity during visuo-spatial attention tasks [ Time Frame: Three years ] [ Designated as safety issue: No ]
    Magnetoencephalography will be used to measured cerebral evoked potential and oscillatory activity, while subjects will performed a visuo-spatial attention task.

Estimated Enrollment: 8
Study Start Date: March 2012
Estimated Study Completion Date: September 2014
Estimated Primary Completion Date: September 2014 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Genders Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Young adults living in Paris or around fulfilling the eligibility criteria

Inclusion Criteria:

  • Subjects aged between 18 and 40 who have signed informed consent for participation to the study and are affiliated to a social security regimen
  • right-handler, without auditory or visual deficit

Exclusion Criteria:

  • history of neurological or psychiatic disease
  • medication
  • sensory disorders
  Contacts and Locations
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Please refer to this study by its identifier: NCT01592175

Paris, France, 75013
Sponsors and Collaborators
Institut National de la Santé Et de la Recherche Médicale, France
  More Information

Responsible Party: Institut National de la Santé Et de la Recherche Médicale, France Identifier: NCT01592175     History of Changes
Other Study ID Numbers: C11-49  2011-A01554-37 
Study First Received: April 16, 2012
Last Updated: May 3, 2012
Health Authority: France: Afssaps - Agence française de sécurité sanitaire des produits de santé (Saint-Denis) processed this record on January 17, 2017