Magnetoencephalography

Basic principles

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Magnetoencephalography (MEG) is the measurement of the magnetic field generated by the electrical activity of neurons. It is usually combined with a magnetic resonance imaging to get what is called magnetic source imaging. The technology that has helped record these minute magnetic fields is super-conducting quantum interference detector which is like a highly sensitive magnetic field meter. To attenuate the external magnetic noise the MEG is housed inside a magnetically shielded room. The actual sensors recording magnetic fields are magnetometers and/or gradiometers. MEG fields pass through the head without any distortion. This is a significant advantage of MEG over electroencephalography. MEG provides a high spatial and temporal resolution. The recording and identification information should be according to the American Clinical Magnetoencephalography Society guidelines published in 2011. MEG currently has two approved indications in the United States, one is for pre-operative brain mapping and the other is for use in epilepsy surgery. MEG studies have shown functional brain tissue inside brain tumors.

Original languageEnglish
JournalAnnals of Indian Academy of Neurology
Volume17
Issue numberSUPPL. 1
DOIs
StatePublished - 2014
Externally publishedYes

Fingerprint

Magnetoencephalography
Magnetic Fields
Brain Mapping
Brain Neoplasms
Noise
Electroencephalography
Epilepsy
Head
Magnetic Resonance Imaging
Guidelines
Technology
Neurons
Brain

All Science Journal Classification (ASJC) codes

  • Clinical Neurology

Cite this

Magnetoencephalography : Basic principles. / Singh, Sanjay.

In: Annals of Indian Academy of Neurology, Vol. 17, No. SUPPL. 1, 2014.

Research output: Contribution to journalArticle

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