Magnetoencephalography in Absence Seizures
Public ClinicalTrials.gov record NCT00884351. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: * An absence seizure is a type of seizure that usually begins in childhood and goes away by early adulthood. Scientists do not yet know where absence seizures begin in the brain. Some evidence suggests that these seizures begin in the thalamus, a structure deep in the brain, but other studies suggest that they begin in the frontal cortex, at the front part of the brain. * Magnetoencephalography is a type of brain scanning procedure that is useful in determining information about what happens to the brain during epileptic seizures. Understanding where absence seizures come from may help doctors find new treatments for them. Objectives: * To gain a better understanding of which parts of the brain are affected in absence seizures. Eligibility: * Patients 7 to 35 years of age who have been diagnosed with absence seizures. Design: * Procedures are for research purposes only, not to diagnose or treat a particular medical condition. * Two outpatient visits to the National Institutes of Health Clinical Center: evaluation and scanning. * Researchers will evaluate potential participants with a medical history, physical examination, and electroencephalography (EEG). These tests will be performed under another protocol, 01-N-0139. * Patients will undergo magnetoencephalography (MEG) and magnetic resonance imaging (MRI) of the brain. The study procedures will be performed one time; however, an MEG or MRI scan may need to be repeated for technical reasons. Researchers will not do more than two MEG or MRI scans. * The MEG will record very small magnetic field changes produced by the activity of the brain. An EEG will be recorded at the same time as the MEG. * The MRI will use a magnetic field to take pictures of the inside of the brain. * The MEG will take 3 hours to complete (2 hours for preparation, 1 hour in the scanner). The MRI will take approximately 1 hour.
Study identification
- NCT ID
- NCT00884351
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 5 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 7 Years to 35 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 14, 2009
- Primary completion
- Not listed
- Completion
- Jun 14, 2011
- Last update posted
- Jul 1, 2017
2009 – 2011
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00884351, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 1, 2017 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00884351 live on ClinicalTrials.gov.