Magnetoencephalography
Magnetoencephalography
Magnetoencephalography (pronunciation: mag·ne·to·en·ceph·a·log·ra·phy) is a non-invasive technique used to measure magnetic fields generated by neuronal activity of the brain. It is often abbreviated as MEG.
Etymology
The term "Magnetoencephalography" is derived from the Greek words magnēt-, meaning magnet, enkephalos, meaning brain, and -graphia, meaning to write.
Procedure
During a Magnetoencephalography (MEG) scan, a helmet-like device is placed over the patient's head to measure the magnetic fields produced by electrical activity in the brain. The data collected can then be used to create a detailed map of the brain's activity.
Applications
Magnetoencephalography is used in a variety of medical and research contexts. It is particularly useful in the study of neurological disorders, such as epilepsy and Alzheimer's disease, as it can provide detailed information about the timing and location of brain activity. It is also used in neurosurgery to help identify the functional areas of the brain before surgical intervention.
Related Terms
- Electroencephalography (EEG): A similar technique that measures the electrical activity of the brain.
- Functional Magnetic Resonance Imaging (fMRI): A technique that measures brain activity by detecting changes associated with blood flow.
- Neuroimaging: The use of various techniques to either directly or indirectly image the structure, function, or pharmacology of the nervous system.
See Also
External links
- Medical encyclopedia article on Magnetoencephalography
- Wikipedia's article - Magnetoencephalography
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