Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Electromagnetic Spectrum02:37

The Electromagnetic Spectrum

64.8K
The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
64.8K
The Electromagnetic Spectrum01:24

The Electromagnetic Spectrum

33.4K
Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
33.4K
Electromagnetic Waves01:30

Electromagnetic Waves

11.2K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
11.2K
Electromagnetic Fields01:30

Electromagnetic Fields

2.7K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
2.7K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

4.9K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
4.9K
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

4.0K
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
4.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reliability of magnetoencephalography beta desynchronization for language lateralization in a subsequent memory effect paradigm.

Clinical neurophysiology practice·2026
Same author

Not all enhancing lesions are tumor recurrence: Foreign body granulomas after glioma resection.

Brain & spine·2026
Same author

Cognitive impairments associated with meningiomas and gliomas in adults: A systematic review.

Neuropsychology·2026
Same author

Prediction, syntax and semantic grounding in the brain and large language models.

Scientific reports·2026
Same author

Application of inverted brain region-specific error vectors can improve spatial accuracy of clinical electrical source imaging.

Epilepsy research·2026
Same author

The role of dexamethasone during treatment phases in glioblastoma: Insights from a retrospective observational study.

Brain & spine·2026
Same journal

Non-invasive assessment of glymphatic dysfunction in middle cerebral artery stenosis based on DTI-ALPS and ro-ALPS.

Frontiers in neurology·2026
Same journal

The difference in scotopic and photopic pupil responses: a potential indicator for long-term glycemic management.

Frontiers in neurology·2026
Same journal

Differential diagnosis of non-hydrocephalus ventricular dilation and hydrocephalus.

Frontiers in neurology·2026
Same journal

Diagnostic biomarkers of ischemic stroke: strengths and limitations across blood, urine, and saliva.

Frontiers in neurology·2026
Same journal

Admission hyperglycemia, estimated glomerular filtration rate and outcome of acute ischemic stroke after mechanical thrombectomy: a mediation analysis.

Frontiers in neurology·2026
Same journal

Prediction models for postoperative cognitive dysfunction in adults: a systematic review of methodological quality and clinical applicability.

Frontiers in neurology·2026
See all related articles

Related Experiment Video

Updated: Jan 22, 2026

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
09:57

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization

Published on: September 20, 2024

3.4K

Presurgical Functional Cortical Mapping Using Electromagnetic Source Imaging.

Rudolf Kreidenhuber1,2, Xavier De Tiège3,4, Stefan Rampp5,6

  • 1Department of Neurology, Christian-Doppler Medical Center, Paracelsus Medical University, Salzburg, Austria.

Frontiers in Neurology
|June 29, 2019
PubMed
Summary
This summary is machine-generated.

Magnetoencephalography (MEG) and high-density electroencephalography (hdEEG) offer valuable insights for preoperative functional cortical mapping. This review compares their clinical utility against other methods for mapping critical brain functions.

Keywords:
EEGfMRIfunctional cortical mappingmagnetoencephalographypresurgical

More Related Videos

Cortical Source Analysis of High-Density EEG Recordings in Children
09:32

Cortical Source Analysis of High-Density EEG Recordings in Children

Published on: June 30, 2014

21.9K
Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping
09:16

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

2.0K

Related Experiment Videos

Last Updated: Jan 22, 2026

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
09:57

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization

Published on: September 20, 2024

3.4K
Cortical Source Analysis of High-Density EEG Recordings in Children
09:32

Cortical Source Analysis of High-Density EEG Recordings in Children

Published on: June 30, 2014

21.9K
Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping
09:16

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

2.0K

Area of Science:

  • Neuroscience
  • Medical Imaging
  • Clinical Neurology

Background:

  • Preoperative functional cortical mapping is crucial for minimizing postoperative neurological deficits.
  • Accurate localization of eloquent brain areas guides surgical planning.
  • Established methods exist, but advancements are continually sought.

Purpose of the Study:

  • To provide an overview of magnetoencephalography (MEG) and high-density electroencephalography (hdEEG) for functional cortical mapping.
  • To compare the clinical roles and performance of MEG and hdEEG with alternative mapping techniques.
  • To assess these modalities for mapping verbal language, sensorimotor, memory, visual, and auditory cortex.

Main Methods:

  • Systematic literature review of magnetoencephalography (MEG) and high-density electroencephalography (hdEEG) studies.
  • Comparative analysis of MEG and hdEEG against functional Magnetic Resonance Imaging (fMRI), Transcranial Magnetic Stimulation (TMS), and invasive methods (WADA-test, intracranial investigations).
  • Evaluation of strengths, weaknesses, and limitations of each modality.

Main Results:

  • MEG and hdEEG demonstrate significant potential for non-invasive functional cortical mapping.
  • Specific strengths and limitations of MEG and hdEEG vary depending on the mapped cortical function.
  • Performance comparison highlights areas where MEG/hdEEG may offer advantages over or complement other techniques.

Conclusions:

  • MEG and hdEEG are valuable tools for preoperative functional cortical mapping, offering complementary information to other methods.
  • These techniques aid in precise localization of critical brain regions, potentially improving surgical outcomes.
  • Further research can refine the clinical application and integration of MEG and hdEEG in neurosurgical planning.