The Elekta Neuromag® TRIUX non-invasively measures the magnetoencephalographic (MEG) signals (and, optionally, electroencephalographic (EEG) signals) produced by electrically active tissue of the brain. These signals are recorded by a computerized data acquisition system, displayed, and may then be interpreted by trained physicians to help localize these active areas. The locations may then be correlated with anatomical information of the brain. MEG is routinely used to identify the locations of visual, auditory, somatosensory, and motor cortex in the brain when used in conjunction with evoked response averaging devices. MEG is also used to non-invasively locate regions of epileptic activity within the brain. The localization information provided by MEG may be used, in conjunction with other diagnostic data, in neurosurgical planning.
An electrically-powered device designed for noninvasive recording of the electrical activity of the brain for display in the form of a graph [electroencephalogram (EEG)], typically to study a variety of neurological conditions, evaluate psychiatric disorders, and/or assist in localizing tumours or lesions on or near the surface of the brain. It is designed to acquire electrical signals from electrodes typically attached to the scalp and ear lobes. The results may be displayed via print-out or electronically; data interpretation and/or telemetry features may also be included.