Related Experiment Video
Updated: Jan 27, 2026

Tickling, a Technique for Inducing Positive Affect When Handling Rats
Published on: May 8, 2018
Does the type of electrode affect the electromyoneurographic parameters in rats?1
Danusa Neves Somensi1, Renan Kleber Costa Teixeira2, Daniel Haber Feijó3
1MD, MS, Department of Neurology, School of Medicine, Universidade do Estado do Pará (UEPA), Belem-PA, Brazil. Conception, design, intellectual and scientific content of the study; interpretation of data; manuscript writing; critical revision.
Purpose:
To evaluate if the type of electrode (needle vs. surface) affects the electromyoneurography parameters in rats.
Methods:
Twenty male rats were anesthetized, then compound muscle action potential were recorded using a Neuropack S1 MEB- 9400©. All animals were submitted to two electroneuromyography analysis: first with surface electrode and then by needle electrode. We evaluated the latency, amplitude, duration and area of the negative peak of the gastrocnemius and cranial tibial muscles.
Results:
There were no significant differences between the groups in the mean of duration, latency, amplitude or area of the negative peak in gastrocnemius and cranial tibial muscles.
Conclusion:
The type of electrode does not affect the electroneuromyography parameters.
Related Concept Videos
Potentiometry: Types of Electrodes
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...
Role of Affect in Interpersonal Attraction
The Influence of Affect on Cognition
The Influence of Cognition on Affect
Standard Electrode Potentials
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

