Suction Electrode
Suction Electrode - Related Videos
08:47
Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication
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Cited by 2 •
2011
A demonstration of the fabrication and use of an extracellular suction electrode used to measure electrophysiological recordings of neonatal rodent spinal cords in...
14:35
Single-cell Suction Recordings from Mouse Cone Photoreceptors
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Cited by 9 •
2010
We will show how to record flash responses from single mouse cones using a suction electrode.
01:25
Suctioning the Oropharyngeal Airway
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2025
In preparing for oropharyngeal airway suctioning, a nurse must gather all necessary equipment, including a suction unit with tubing, a prepackaged suction kit, sterile gloves, water or saline for irrigation, a water-soluble lubricant, and additional personal protective equipment (such as a gown, mask, and goggles) to control infections. After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
01:29
Suctioning the Nasopharyngeal Airway
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2025
Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia. Equipment Required Suction machine with adjustable pressure settings Sterile suction catheters (appropriate size for the patient) Sterile gloves Sterile saline or water (for irrigation or lubrication) Water-soluble lubricant Personal protective...
08:08
Odorant-induced Responses Recorded from Olfactory Receptor Neurons using the Suction Pipette Technique
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Cited by 13 •
2012
Olfactory receptor neurons (ORNs) convert odor signals first into a receptor current that in turn triggers action potentials that are conveyed to second order neurons in the olfactory bulb. Here we describe the suction pipette technique to record simultaneously the odorant-induced receptor current and action potentials from mouse ORNs.
FAQs
The suction seal helps keep the electrode positioned against the biological target while limiting signal loss at the contact. This stable interface allows voltage changes associated with activity to be recorded more effectively than an unstable contact would permit. Because the seal forms around the cell, tissue, or nerve, researchers can maintain measurements while the preparation remains under observation.
Its role depends on how it is used in the electrophysiological experiment. In recording mode, the electrode detects voltage changes generated by the preparation. In stimulation mode, it permits current flow toward the target. This dual function lets investigators examine both ongoing electrical behavior and responses produced when biological tissue is electrically activated.
A relatively nonpenetrating design allows researchers to monitor electrical behavior without relying on a penetrating contact. That can be valuable when measurements must continue over time, because the electrode remains positioned through suction while maintaining contact with the preparation. In biology, this supports extended observation of membrane excitability, nerve conduction, or muscle activity.
Gentle suction has two linked roles: it positions the electrode against the target and helps create the seal needed for electrical measurement or stimulation. The quality of that contact influences how much signal is lost during the experiment. Maintaining the seal is therefore important when researchers want voltage changes or current flow to reflect the preparation rather than a shifting electrode.
Researchers first place the electrode against the selected cell, tissue, or nerve and use gentle suction to form a seal. Once contact is maintained, they configure the experiment either to record voltage changes or to deliver current. The resulting measurements can then be used to examine electrical activity, nerve conduction, membrane excitability, or communication within the preparation.
The technique can address questions about how neurons and muscles generate electrical activity, how signals travel along nerves, and how excitable membranes respond. It can also help investigate communication between cells by monitoring electrical behavior while contact is maintained. These uses make suction electrodes relevant to physiology, neuroscience, and broader studies of tissue responses to electrical stimulation.