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Related Concept Videos

Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
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Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

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.
Three-Winding Transformers01:19

Three-Winding Transformers

Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...
Magnetic Damping01:17

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Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
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Differential Relays01:20

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Related Experiment Video

Updated: May 16, 2026

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
09:52

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation

Published on: February 23, 2020

Dynamic multi-channel TMS with reconfigurable coil.

Ruoli Jiang1, Ben H Jansen, Bhavin R Sheth

  • 1Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA.

IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
|November 30, 2012
PubMed
Summary
This summary is machine-generated.

This study introduces a novel transcranial magnetic stimulation (TMS) system using reconfigurable coils. This new technology allows for flexible, multi-site brain stimulation, advancing neuroscience research.

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Last Updated: May 16, 2026

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
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Published on: February 23, 2020

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08:32

External Excitation of Neurons Using Electric and Magnetic Fields in One- and Two-dimensional Cultures

Published on: May 7, 2017

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Cognitive Science

Background:

  • Investigating brain function requires precise stimulation tools.
  • Current transcranial magnetic stimulation (TMS) is limited to single-site stimulation per trial.

Purpose of the Study:

  • To present a feasibility study for a novel TMS system with multi-channel reconfigurable coils.
  • To enable dynamic, multi-site brain stimulation with high spatio-temporal resolution.

Main Methods:

  • Development of a wire-mesh coil with x- and y-directional wires.
  • Configurable coil design allowing for various standard coil types (loop, figure-eight).
  • Computer simulations and bench experiments to demonstrate feasibility.

Main Results:

  • The proposed system allows for flexible configuration of coil shape, size, and location.
  • Dynamic reconfiguration of stimulation sites multiple times within seconds is demonstrated.
  • Feasibility of the dynamically-reconfigurable coil system is confirmed through simulations and experiments.

Conclusions:

  • The novel TMS system offers unprecedented flexibility for brain stimulation research.
  • Dynamic TMS capabilities open new avenues for studying behavior, learning, and rehabilitation.
  • This technology has the potential to significantly advance the understanding of brain function and therapeutic interventions.