Electrophysiological Current Recording
Electrophysiological Current Recording - Related Videos
11:31
Electrophysiological Recording in the Drosophila Embryo
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Cited by 6 •
2009
Electrophysiological recordings from Drosophila embryos allow analyses of developing muscle and neuron electrical properties, as well as characterization of functional synaptogenesis at the glutamatergic neuromuscular junction and central cholinergic and GABAergic synapses.
06:00
Forebrain Electrophysiological Recording in Larval Zebrafish
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Cited by 55 •
2013
A simple method to record extracellular field potentials in the larval zebrafish forebrain is described. The method provides a robust in vivo read-out of seizure-like activity. This technique can be used with genetically modified zebrafish larvae carrying epilepsy-related genes or seizures evoked by administration of convulsant drugs.
02:14
Electrophysiological Recordings of Reprogrammed Neurons in a Mouse Brain Slice
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2025
This video demonstrates a protocol to evaluate the maturation and reprogramming of glial cells into neurons in a transfected mouse striatum slice. The experiment measures resting membrane potential and response to current injections using neuron-specific fluorescent markers and electrophysiological techniques. Voltage spikes during these measurements indicate successful neuronal maturation and reprogramming.
07:17
Electrophysiological Recordings of Single-cell Ion Currents Under Well-defined Shear Stress
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Cited by 3 •
2019
The goal of this protocol is to describe a modified parallel plate flow chamber for use in investigating real time activation of mechanosensitive ion channels by shear stress.
09:42
Electrophysiological Recording in the Brain of Intact Adult Zebrafish
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Cited by 14 •
2013
This paper describes how an adult zebrafish can be immobilized, intubated, and used for in vivo electrophysiological experiments to allow recordings and manipulation of neural activity in an intact animal.
FAQs
Voltage-controlled recordings set membrane voltage and quantify the ionic current that follows, whereas current-controlled recordings alter current and observe resulting electrical behavior. This distinction lets investigators examine channel function under different experimental controls rather than treating all membrane signals as equivalent. In cancer research, the resulting measurements help relate altered electrical properties to the behavior of tumor cells.
A high-resistance seal between the electrode and membrane is a critical quality feature because it enables currents to be measured under controlled voltage or current conditions. Its role is to maintain the experimental relationship between the electrode, membrane, and recording signal. Reliable seals therefore support meaningful comparisons of ion-channel activity across tumor cells or treatments.
Changes in ion-channel activity can be interpreted as an electrical correlate of cancer-cell behavior rather than as an isolated membrane measurement. By comparing current recordings with proliferation, migration, invasion, or cell-death responses, researchers can investigate how channel function relates to these phenotypes. This connection helps move from describing channel activity to evaluating its biological significance in tumor cells.
A typical workflow begins by positioning an electrode against the cell membrane and forming a high-resistance seal. The experimenter then applies controlled voltage or current changes and records the resulting ionic currents under defined conditions. Those measurements are quantified to assess membrane excitability and ion-channel function. The same workflow can be used before and after a treatment to examine electrical effects.
Defined conditions make the applied electrical stimulus and the measured response interpretable. They allow investigators to attribute differences in recorded ionic currents to changes in membrane or channel behavior within the experiment, rather than to an uncontrolled recording context. In cancer studies, this is especially useful when comparing tumor-cell states or assessing how a channel-targeting compound changes cellular responses.
Researchers can use the measurements to characterize ion-channel activity in tumor cells, then examine whether channel-targeting compounds alter the recorded response and associated cellular behavior. If electrical changes align with effects on proliferation, migration, invasion, or cell death, the channel becomes a candidate for further therapeutic evaluation. Thus, recording links molecular activity with cancer phenotypes.