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Cerebral magnetic fields | JoVE Visualize

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Mathematical Sciences

Cerebral magnetic fields

R Hari, R J Ilmoniemi

Critical Reviews in Biomedical Engineering|January 1, 1986

View abstract on PubMed

Summary

Neuromagnetism measures brain magnetic fields to study neural functions. This review covers its principles, instrumentation, and experimental results, highlighting future prospects.

Area of Science:

Neuroscience
Biophysics
Biomagnetism

Background:

Neuromagnetism investigates neural functions via magnetic field measurements.
It explores the neural origins of electromagnetic fields.
Understanding these fields is crucial for brain activity mapping.

Purpose of the Study:

To present the state-of-the-art in neuromagnetism.
To review the forward and inverse problems in the field.
To discuss instrumentation, experimental results, and future prospects.

Main Methods:

Discusses the neural origin of electromagnetic fields.
Analyzes the forward problem (calculating magnetic fields from currents) and the inverse problem (calculating currents from magnetic fields).
Reviews instrumentation, experimental results (spontaneous and evoked fields), and future directions.

Main Results:

Highlights advancements in neuromagnetic instrumentation.
Summarizes experimental findings in spontaneous cerebral magnetic fields and evoked-field studies.
Discusses applications in normal subjects and epileptic patients.

Conclusions:

Neuromagnetism offers valuable insights into brain function.
Advances in instrumentation are enhancing measurement capabilities.
The field holds significant promise for future neuroscience research and clinical applications.

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Cerebral Magnetic Fields