Magnetoencephalography (MEG), Attention and Conscience

Spatio-temporal Dynamic of the Relationship Between Spatial Attention and Visual Awareness

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.

Study Overview

• Status: Completed
• Conditions: Reaction Time; Awareness; Change in Sustained Attention

• Study Type: Observational
• Enrollment (Actual): 32

Contacts and Locations

Study Locations

• France
  • Paris, France, 75013
    • CRICM

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 40 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Young adults living in Paris or around fulfilling the eligibility criteria

Description

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

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Brain activity during visuo-spatial attention tasks	Magnetoencephalography will be used to measured cerebral evoked potential and oscillatory activity, while subjects will performed a visuo-spatial attention task.	Three years

Collaborators and Investigators

• Sponsor: Institut National de la Santé Et de la Recherche Médicale, France

Study record dates

Study Major Dates

• Study Start (ACTUAL): March 8, 2012
• Primary Completion (ACTUAL): July 1, 2013
• Study Completion (ACTUAL): July 2, 2013

Study Registration Dates

• First Submitted: April 16, 2012
• First Submitted That Met QC Criteria: May 3, 2012
• First Posted (ESTIMATE): May 7, 2012

Study Record Updates

• Last Update Posted (ACTUAL): August 30, 2021
• Last Update Submitted That Met QC Criteria: August 27, 2021
• Last Verified: August 1, 2021

More Information

Terms related to this study

• Other Study ID Numbers: C11-49; 2011-A01554-37 (REGISTRY: IDRCB)