Nerve Signaling
Nerve Signaling - Related Videos
07:30
The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals
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Cited by 5 •
2022
This manuscript provides an innovative method for developing a biologic peripheral nerve interface termed the Muscle Cuff Regenerative Peripheral Nerve Interface (MC-RPNI). This surgical construct can amplify its associated peripheral nerve's motor efferent signals to facilitate accurate detection of motor intent and the potential control of exoskeleton devices.
02:50
Toluidine Blue Staining of Peripheral Nerve Sections: A Technique to Stain Myelinated Nerve Fibers For Peripheral Nerve Structure Visualization
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2025
This video demonstrates the staining technique of resin-embedded, osmium tetroxide-treated rat peripheral nerve sections using toluidine blue. The stained nerve sections help visualize the fine structures of peripheral nerves.
05:37
Visualization of Mitochondria within Intraepidermal Nerve Fibers
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2025
Source: Hamid, H. S., et al. Three-dimensional Imaging and Analysis of Mitochondria within Human Intraepidermal Nerve Fibers. J. Vis. Exp. (2017) This video demonstrates the method for visualizing nerve-specific mitochondria using three-dimensional imaging. It outlines the process of acquiring sequential scans of pre-labeled intraepidermal nerve fibers and generating 3D surface images to isolate and display mitochondria in relation to nerve structures.
11:07
In Vivo Electrophysiological Measurements on Mouse Sciatic Nerves
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Cited by 52 •
2014
Measurements of nerve conduction properties in vivo exemplify a powerful tool to characterize various animal models of neuromuscular diseases. Here, we present an easy and reliable protocol by which electrophysiological analysis on sciatic nerves of anesthetized mice can be performed.
02:00
Vagus Nerve Stimulation via Chronically Implanted Peripheral Nerve Cuff Electrodes in Rats
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2025
Source: Sanchez, C. A., et al. Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats. J. Vis. Exp. (2020).This video demonstrates vagus nerve stimulation in an awake rat. A rat with an implanted chronic peripheral nerve cuff electrode and trained in a lever press task is connected to a stimulus generator via an implanted head cap. The vagus nerve is stimulated immediately after each successful lever press, resulting in the expansion of the motor map.
FAQs
Threshold functions as the trigger point at which a neuron's membrane potential initiates an action potential. Voltage-gated ion channels then rapidly change the cell's electrical state, allowing the signal to proceed through the neuron. This threshold-and-channel relationship explains how small membrane changes can become a coordinated message rather than remaining local.
At a synapse, neurotransmitters carry the message onward to a neuron, muscle cell, or gland. This chemical handoff extends the signaling pathway beyond the originating neuron and links neural activity with movement or gland function. Distinguishing these possible targets helps researchers interpret how a signal can produce different biological outcomes.
The electrical and chemical stages serve different roles in one communication pathway. Changes in membrane potential and voltage-gated ion channels handle rapid electrical transmission within the neuron, whereas neurotransmitters carry information across a synapse to a receiving cell. Keeping these stages distinct helps explain where signaling can be altered by research or treatment.
Examining nerve signaling helps researchers connect cellular events with neural-circuit behavior. The process provides a framework for asking how circuits process information and coordinate sensation, movement, cognition, and other nervous-system functions. This connection makes the topic useful in biology and neuroscience, where cellular communication must be related to whole-system outcomes.
Applications extend across physiology, neuroscience, and pharmacology. In physiology, signaling principles support study of nervous-system function; in neuroscience, they help frame questions about information processing and coordination; in pharmacology, they provide a basis for developing treatments that modify electrical or chemical communication. The same foundation therefore links basic biology with therapeutic research.
Disruptions in nerve signaling are scientifically important because they can contribute to neurological disorders. Researchers can use the signaling framework to examine whether problems involve electrical communication, chemical communication at synapses, or the way neural circuits process information. This perspective also supports treatment research aimed at modifying either electrical or chemical signaling.