Cell Electrical Behavior
Cell Electrical Behavior - Related Videos
10:56
Long-term Behavioral Tracking of Freely Swimming Weakly Electric Fish
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Cited by 15 •
2014
We describe a set of techniques for studying spontaneous behavior of freely swimming weakly electric fish over an extended period of time, by synchronously measuring the animal's electric organ discharge timing, body position and posture both accurately and reliably in a specially designed aquarium tank inside a sensory isolation chamber.
10:08
Light-Induced Dielectrophoresis for Characterizing the Electrical Behavior of Human Mesenchymal Stem Cells
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Cited by 1 •
2023
Here, we present light-induced dielectrophoresis as a label-free approach for characterizing heterogeneous cell lines, specifically human mesenchymal stem cells (hMSCs). This paper describes a protocol for using and optimizing a microfluidic device with a photoconductive layer to characterize the electrical behavior of hMSCs without altering their native state.
10:23
Electric Fields
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2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN An electric field is generated by a charged object (referred to as the source charge) in the space around it, and represents the ability to exert electric force on another charged object (referred to as the test charge). Represented by a vector at any given point in the space, the electric field is the electrical force per unit test charge placed at that point (the force...
04:46
Changing the Direction and Orientation of Electric Field During Electric Pulses Application Improves Plasmid Gene Transfer in vitro
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Cited by 2 •
2011
Gene transfection by electroporation is improved approximately two times when orientation of electric field is changed during pulse application, while cell viability is not affected. The increase in gene transfection is caused by the increase of the membrane area which is made competent for DNA entry into the cell.
06:50
Electric Potential
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2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN Electric potential, also known as "voltage", measures the electric potential energy per unit charge. Electric field is a scalar quantity and is fundamental to many electrical effects. Like potential energy, what is physically meaningful is the difference in the electric potential. For example, the spatial variation in the electric potential is related to the electric...
FAQs
Ion channels regulate electrical activity by opening or closing in response to voltage, ligands, or mechanical stimuli. Their selective permeability permits particular charged particles to cross the membrane, producing ionic currents. Depending on channel behavior, these currents can create transient signals or sustained changes in membrane voltage, allowing cells to respond to external or internal cues.
Ion concentration gradients provide the driving conditions for membrane potential and ionic movement. When the membrane selectively permits certain ions to pass, their redistribution changes the voltage across the membrane. This relationship connects chemical differences to electrical output, helping explain how cells generate signals and coordinate functions without requiring every cell to produce the same response.
The duration and pattern of electrical activity depend partly on how ion channels respond and remain open or closed. Voltage-, ligand-, or mechanically gated channels can produce brief ionic currents or support longer-lasting changes in membrane voltage. Measuring these patterns helps distinguish short-lived signaling events from persistent alterations in cellular electrophysiological state.
Researchers can measure cellular electrical activity with electrodes, patch-clamp systems, or optical sensors. These approaches provide different ways to monitor voltage or ionic currents and can be applied to excitable cells such as neurons and cardiomyocytes. The resulting measurements help characterize signaling patterns and reveal how experimental conditions, disease, or biomaterials alter cell function.
A typical study selects an appropriate cell type, applies an electrode, patch-clamp system, or optical sensor, and records voltage or ionic-current changes. Researchers then compare the measured patterns with the experimental condition or control. This workflow can identify altered electrical responses and connect cellular signals with the performance of engineered tissues, interfaces, or sensing systems.
These tools are useful when researchers need to characterize electrical activity in cells or evaluate how a material or disease-related condition affects function. Electrodes, patch-clamp systems, and optical sensors provide measurement options for excitable cells, including neurons and cardiomyocytes. Their use supports analysis of cellular responses in biosensor development, neural interfaces, cardiac models, and engineered tissues.
Electrical measurements provide functional information that can guide the design and evaluation of biosensors, neural interfaces, cardiac models, and engineered tissues. By observing voltage and ionic-current responses, bioengineers can assess whether cells communicate and respond appropriately within a system. The same measurements can also reveal functional changes caused by biomaterials or disease, supporting more informed model development.