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Brain Electrophysiological Patterns in Obesity

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00842569
Recruitment Status : Completed
First Posted : February 12, 2009
Last Update Posted : February 12, 2009
Information provided by:
Centre de Recherche en Nutrition Humaine Rhone-Alpe

Brief Summary:
There is growing evidence of behavioural and neurobiological overlaps between obesity and drug abuse. Reduction of the amplitude of P300, a component of event-related potentials (ERP) elicited by an oddball paradigm, is an electrophysiological characteristic and a marker of vulnerability in substance abuse. We want to determine whether obesity is associated with such electrophysiological features during an auditory oddball paradigm. We postulate that obesity could be associated with electrophysiological abnormalities that could be viewed as a possible vulnerability marker for food addiction.

Condition or disease

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Study Type : Observational
Actual Enrollment : 69 participants
Observational Model: Case-Control
Official Title: ERP Study of Brain Electrophysiological Patterns in Obesity
Study Start Date : January 2008
Actual Primary Completion Date : December 2008

Normal weighted

Primary Outcome Measures :
  1. Evaluation of amplitudes and latencies of the P300 complex of Event Related Potential during an oddball paradigm, in normal-weighted and obese subjects

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
a healthy but normal-weighted or obese population. Depressive state or eating disorders were carefully evaluated.

Inclusion Criteria:

  • The inclusion criteria for the study are men and women aged 20-60 years, BMI 18.5-24.9 kg/m2 for control subjects and BMI>30 kg/m2 for obese subjects, stable body weight over the previous 3 months, report of sedentary or moderate physical activity

Exclusion Criteria:

  • The exclusion criteria are pregnancy, post-menopausal women, any physiological or psychological illness that could influence the results, subjects likely to take medical drugs interfering with the electrophysiological parameters of the study, diabetes, hearing disorder, intense physical activity and report or evidence of excessive alcohol consumption, depressive state or eating disorders according to Diagnostic and Statistical Manual of Mental Disorders (DSM-IV).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00842569

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Centre de Recherche en Nutrition Humaine Rhone Alpes
Lyon, France, F69008
Sponsors and Collaborators
Centre de Recherche en Nutrition Humaine Rhone-Alpe
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Principal Investigator: Emmanuel DISSE, MD CRNH Rhone-Alpes
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Responsible Party: Dr Emmanuel DISSE, Centre de Recherche en Nutrition Humaine Rhone-Alpe Identifier: NCT00842569    
Other Study ID Numbers: CRNHRA-09-001
First Posted: February 12, 2009    Key Record Dates
Last Update Posted: February 12, 2009
Last Verified: February 2009
Keywords provided by Centre de Recherche en Nutrition Humaine Rhone-Alpe:
cognitive process
Event-related potential during oddball paradigm
brain electrophysiological patterns
externalizing factor
Additional relevant MeSH terms:
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Nutrition Disorders
Body Weight