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Updated: Dec 1, 2025
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Functional Mapping with Simultaneous MEG and EEG
Published on: June 14, 2010
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Visual Mapping With Magnetoencephalography: An Update on the Current State of Clinical Research and Practice With
Andrew Zillgitt1, Gregory L Barkley1, Susan M Bowyer1,2,3
1Department of Neurology, Henry Ford Health System, Detroit, Michigan, U.S.A.
Summary
Visual evoked fields (VEFs) reliably distinguish healthy from dysfunctional brain cortex. Current guidelines support VEFs for identifying visual cortex and guiding surgical resections in epilepsy and brain tumors.
Area of Science:
- Neuroscience
- Clinical Neurophysiology
Background:
- Visual evoked fields (VEFs) are established as valid and reliable measures of brain function.
- Current clinical applications of VEFs include guiding intracranial surgeries for epilepsy and brain tumors.
Purpose of the Study:
- To review the current clinical utility and future potential of VEFs.
- To assess the adequacy of existing clinical practice guidelines for VEFs.
Main Methods:
- Review of existing literature on VEF applications.
- Analysis of current clinical practice guidelines.
Main Results:
- VEFs effectively differentiate healthy from dysfunctional cortical activity.
- Existing clinical practice guidelines for VEFs are deemed sufficient.
- VEFs show potential for early disorder identification and studying disease pathophysiology.
Conclusions:
- VEFs are currently recommended for identifying the visual cortex and tailoring surgical resections.
- Future applications may include early diagnosis of neurological disorders like multiple sclerosis, Parkinson's disease, stroke, and HIV-associated neurocognitive disorders.
