Related Experiment Video
Updated: Jan 20, 2026
07:30
The Muscle Cuff Regenerative Peripheral Nerve Interface for the Amplification of Intact Peripheral Nerve Signals
Published on: January 13, 2022
2.5K
Solutions to the technical challenges embedded in the current methods for intraoperative peripheral nerve action
Gang Wu1, Allan Belzberg1, Jessica Nance2
1Departments of1Neurosurgery and.
Journal of Neurosurgery
|August 17, 2019
Summary
Improving intraoperative nerve action potential (NAP) recording involves overcoming stimulus artifacts. Bridge grounding and nonlifting techniques effectively unmask NAPs, enhancing surgical guidance during nerve repair.
Area of Science:
- Neurosurgery
- Neurophysiology
- Biomedical Engineering
Background:
- Intraoperative nerve action potential (NAP) recording aids surgical decisions in nerve repair.
- Current techniques face challenges with stimulus artifacts masking NAPs.
- Improving NAP recording reliability is crucial for effective neurophysiological testing.
Purpose of the Study:
- To enhance intraoperative nerve action potential (NAP) recording techniques.
- To address and mitigate stimulus artifacts that obscure NAP signals.
- To improve the reliability and interpretability of intraoperative NAP recordings.
Main Methods:
- NAP recordings were performed on surgically exposed peripheral nerves in monkeys.
- A model system was used to investigate artifact generation and suppression.
- The developed techniques were applied to clinical intraoperative recordings.
Main Results:
- Lifting the nerve during recording exacerbated stimulus artifacts, obscuring NAPs.
- "Bridge grounding" effectively suppressed artifacts and enabled reliable NAP acquisition.
- Nonlifting techniques and bridge grounding yielded clean NAPs in animal and clinical settings.
Conclusions:
- Nerve lifting in intraoperative NAP recording creates a loop effect, increasing stimulus artifacts.
- Nonlifting recording or "bridge grounding" significantly improves NAP signal clarity.
- These refined techniques enhance intraoperative neurophysiological assessment and surgical guidance.
Related Concept Videos
01:31Action Potential
4.4K
Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
4.4K
01:14Action Potential
10.8K
Neurons communicate by firing action potentials—the electrochemical signal that is propagated along the axon. The signal results in the release of neurotransmitters at axon terminals, thereby transmitting information to the nervous system. An action potential is a specific "all-or-none" change in membrane potential that results in a rapid spike in voltage.
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
10.8K
01:41Action Potentials
141.5K
Overview
141.5K
01:23Propagation of Action Potentials
9.0K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
9.0K
01:30Cardiac Action Potential
5.9K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
5.9K
01:28Action Potential: Phases of Stimulation
11.7K
The action potential is a complex electrical event that occurs in excitable cells, such as neurons and muscle cells. It consists of several distinct phases, each with specific characteristics.
Resting Phase:
In this phase, the cell's membrane is at its resting potential, typically around -70 millivolts (mV) for neurons. Inside the cell, there is a higher concentration of potassium ions (K+) and a lower concentration of sodium ions (Na+). Voltage-gated sodium channels are closed, and...
Resting Phase:
In this phase, the cell's membrane is at its resting potential, typically around -70 millivolts (mV) for neurons. Inside the cell, there is a higher concentration of potassium ions (K+) and a lower concentration of sodium ions (Na+). Voltage-gated sodium channels are closed, and...
11.7K