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

Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

5.0K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
5.0K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

5.0K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
5.0K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.9K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.9K
Magnetic Vector Potential01:15

Magnetic Vector Potential

797
In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
Consider an ideal solenoid with n turns per unit length and radius R. If I is the current through the solenoid, the magnetic field inside the solenoid is expressed as the product of vacuum...
797
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

4.2K
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
4.2K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

1.4K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Real-time electric-field neuronavigation on realistic head models for conventional and multi-locus TMS.

Brain stimulation·2026
Same author

Experiences of ictal OP-MEG.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology·2026
Same author

Feasibility Study of Supplementary Motor Area to Primary Motor Cortex Facilitation using Multi-locus Transcranial Magnetic Stimulation<sup></sup>.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Early insights into eyeblink conditioning using optically pumped magnetometer-based MEG.

Frontiers in human neuroscience·2025
Same author

Combining magnetoencephalography with telemetric streaming of intracranial recordings and deep brain stimulation-A feasibility study.

Imaging neuroscience (Cambridge, Mass.)·2025
Same author

Combining video telemetry and wearable MEG for naturalistic imaging.

Imaging neuroscience (Cambridge, Mass.)·2025
Same journal

Correction: A method for supervoxel-wise association studies of age and other non-imaging variables from coronary computed tomography angiograms.

Scientific reports·2026
Same journal

Poly(bromophenol blue)/CoSn(OH)<sub>6</sub> cubic particles modified pencil graphite electrode for electrochemical determination of diphenhydramine.

Scientific reports·2026
Same journal

Dietary Chlorella, Spirulina, and acidifier modulate jejunal cytokine-related gene expression in broiler chickens.

Scientific reports·2026
Same journal

Perceived physical activity barriers in university students: associations with fatigue and eating behaviours.

Scientific reports·2026
Same journal

Refuge limitation structures habitat use in agricultural landscapes: evidence from Sunda pangolins.

Scientific reports·2026
Same journal

Lightweight stateless transaction verification with outsourced witness updates for UTXO blockchains.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Sep 14, 2025

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
08:57

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT

Published on: March 3, 2023

2.0K

Volume conductor models for magnetospinography.

George C O'Neill1, Meaghan E Spedden2, Maike Schmidt2

  • 1Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK. g.o'neill@ucl.ac.uk.

Scientific Reports
|July 19, 2025
PubMed
Summary
This summary is machine-generated.

New wearable sensors enable biomagnetic field investigation. Spinal cord current direction significantly impacts magnetic field measurements, with bone presence attenuating signals and altering field topographies.

More Related Videos

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.7K
Multiple-mouse Neuroanatomical Magnetic Resonance Imaging
09:08

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Published on: February 27, 2011

16.0K

Related Experiment Videos

Last Updated: Sep 14, 2025

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
08:57

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT

Published on: March 3, 2023

2.0K
Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.7K
Multiple-mouse Neuroanatomical Magnetic Resonance Imaging
09:08

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Published on: February 27, 2011

16.0K

Area of Science:

  • Biophysics
  • Biomagnetism
  • Neuroscience

Background:

  • Small, wearable magnetic field sensors offer unprecedented flexibility for biomagnetic field investigations.
  • Understanding the relationship between internal current flow and external magnetic fields is crucial for non-invasive diagnostics.

Purpose of the Study:

  • To computationally model magnetic fields generated by spinal cord currents.
  • To evaluate the impact of different volume conductor models on these magnetic fields.
  • To determine the most accurate and parsimonious model for describing spinal cord biomagnetism.

Main Methods:

  • Forward computation of magnetic fields from spinal cord and thoracic current flow.
  • Comparison of various open-access volume conductor models.
  • Analysis of sensitivity to current direction and inclusion of bone in models.

Main Results:

  • Magnetic fields from superior-inferior spinal cord currents are robust to volume conductor model choice.
  • Fields from left-right and anterior-posterior currents are significantly attenuated by bone.
  • Models including bone show greater differences in field topography for localized sources.

Conclusions:

  • The inclusion of bone in volume conductor models is critical for accurately predicting biomagnetic fields from spinal cord activity.
  • Precise anatomical localization of the spinal cord and surrounding vertebrae is essential for future biomagnetic modeling.
  • Wearable sensors combined with accurate modeling hold promise for advanced neuroimaging.