magnetoencephalography

Indications

• epilepsy

Clinical significance

• provides millisecond-accurate information about neuronal currents supporting human brain function
• provides complementary information to electroencephalography

Procedure

• technique for mapping brain activity by recording magnetic fields produced by endogenous electrical currents in the brain
• magnetic field are detected with arrays of SQUIDs (superconducting quantum interference devices)
• records weak magnetic fields outside the human head

More general terms

• electrophysiologic measurement