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Potentiometry: Types of Electrodes

Potentiometry: Types of Electrodes

Reference electrodes serve as a stable reference point for potentiometric measurements, while indicator and working electrodes react to variations in the composition of a solution.
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...

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Recording sensory nerve action potential using different electrode types.

Sanjeev D Nandedkar^1,2, Paul E Barkhaus²

¹Natus Medical Inc, Middleton, Wisconsin, USA.

|June 10, 2023

Summary

This summary is machine-generated.

Disposable disc electrodes (DDE) can be used for both motor and sensory nerve conduction studies, potentially reducing testing time. This study found DDE comparable to other electrode types for recording sensory nerve action potentials.

Keywords:

amplitude electrodes electrodiagnosis sensory nerve action potential sensory nerve conduction study technique

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Area of Science:

Neuroscience
Clinical Electrophysiology

Background:

Nerve conduction studies (NCS) are crucial for diagnosing neuromuscular disorders.
Switching electrode types during NCS prolongs examination time.

Purpose of the Study:

To evaluate the efficacy of disposable disc electrodes (DDE) for recording antidromic sensory nerve action potentials (SNAP).
To determine if DDE can be used interchangeably with traditional electrodes in median, ulnar, and radial NCS.

Main Methods:

Healthy subjects underwent SNAP recordings using four electrode types: reusable ring, reusable bar, disposable ring, and DDE.
Electrodes were used in a random, rotating order for median, ulnar, and radial nerves.

Main Results:

No statistically significant differences were observed in latency, amplitude, or conduction velocity between electrode types.
The peak latency difference between DDE and reusable ring electrodes was <0.2 ms in 97% of recordings.
Mean negative peak amplitude difference was 3.1 μV, with larger differences associated with artifacts.

Conclusions:

Disposable disc electrodes (DDE) are suitable for recording sensory nerve action potentials.
Using DDE for both motor and sensory NCS can streamline electrodiagnostic testing and reduce overall study duration.