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Related Concept Videos

Peripheral Nervous System: Ganglia and Nerves01:24

Peripheral Nervous System: Ganglia and Nerves

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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
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Electrical Current01:10

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Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
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Current Density01:21

Current Density

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The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
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Eddy Currents01:25

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Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
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Displacement Current01:19

Displacement Current

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Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
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Charge and Current01:14

Charge and Current

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Electric charge is the most fundamental quantity in an electric circuit. The effects of electric charge are encountered daily, such as when a wool sweater sticks to the human body or when a person receives a shock while walking on a carpet.
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Related Experiment Video

Updated: Feb 4, 2026

Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats
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Current Innovations in Peripheral Nerve Stimulation.

Raghavendra Nayak1, Ratan K Banik1

  • 1Department of Anesthesiology, School of Medicine, University of Minnesota, Minneapolis, MN, USA.

Pain Research and Treatment
|October 11, 2018
PubMed
Summary
This summary is machine-generated.

Peripheral nerve stimulation (PNS) offers an effective treatment for chronic pain unresponsive to traditional therapies. Newer, less invasive PNS devices provide wireless, external pulse generation for improved patient outcomes.

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Area of Science:

  • Neurology
  • Pain Medicine
  • Biomedical Engineering

Background:

  • Peripheral nerve stimulation (PNS) is a recognized treatment for chronic pain conditions.
  • It is effective for intractable pain refractory to conventional therapies like physical therapy, medications, and nerve blocks.
  • Conditions treated include peripheral nerve dysfunctions, complex regional pain syndrome, and cranial neuralgias.

Purpose of the Study:

  • To review the history, pathophysiology, indications, and outcomes of peripheral nerve stimulation for chronic pain.
  • To discuss the advancements in a new generation of less invasive PNS devices.

Main Methods:

  • Literature review of peripheral nerve stimulation techniques and outcomes.
  • Discussion of novel wireless PNS devices and their implantation.

Main Results:

  • PNS is effective for chronic, intractable pain.
  • Newer devices offer less invasive implantation with wireless external pulse generators.
  • PNS provides a viable alternative when conventional treatments fail.

Conclusions:

  • Peripheral nerve stimulation is a valuable therapeutic option for diverse chronic pain conditions.
  • Advancements in PNS technology are enhancing treatment efficacy and patient experience.
  • Further research into PNS pathophysiology and outcomes is warranted.