Electrical Pacing
Electrical Pacing - Related Videos
06:14
Translational Rabbit Model of Chronic Cardiac Pacing
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2023
We present a minimally invasive leporine model of long-term cardiac pacing that can be utilized for artificial pacing and heart failure development in preclinical studies.
07:29
Programmed Electrical Stimulation in Mice
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Cited by 48 •
2010
Programmed electrical stimulation provides the ability to determine conduction properties of the heart, and the possibility to induce and terminate cardiac arrhythmias using various pacing protocols. Using a transvenous catheter, intracardiac electrogram recordings can be obtained in mice following programmed electrical stimulation protocols to identify arrhythmogenic substrates.
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...
04:53
Electrical Safety
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2023
Robert M. Rioux & Suprita Jharimune, Pennsylvania State University, University Park, PA Among the many hazards present in the laboratory, electrical hazards are one of the most common we must be cognizant of since most of the laboratory equipment we use requires electricity for operation. Improper handling or operation of electrical devices might lead to electric shock with the potential risk of injury or even death. Electric sparks can lead to fire or explosion (since many flammable...
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...
FAQs
These parameters determine how often and how strongly excitable cells are driven, as well as when activity begins relative to an ongoing biological rhythm. Adjusting them allows researchers to test whether cells respond consistently, alter their activity, or coordinate tissue-level behavior. Comparing responses across settings can reveal physiological limits and help model abnormal rhythmic function.
A stimulus must change the membrane potential sufficiently to reach the threshold associated with action-potential initiation. Once that threshold is reached, the cell can produce an electrical response that influences downstream activity, including contraction in muscle. This threshold-based behavior lets investigators examine how reliably cells respond and how altered excitability affects coordinated tissue function.
The same general strategy can probe different biological outputs depending on the excitable tissue examined. Cardiac studies emphasize rhythmic activity, neuronal studies focus on signaling, and muscle studies evaluate electrically coordinated contraction. Comparing these responses shows how stimulation parameters interact with tissue-specific physiology and supports models of normal function or disease-related dysfunction.
A typical study begins by selecting an excitable cell population or tissue and defining the response of interest, such as rhythm, signaling, or contraction. Researchers then apply controlled pulses while varying frequency, intensity, or timing, and assess the resulting physiological response. Repeating this comparison helps identify stimulation conditions associated with consistent or meaningful biological changes.
It is useful when researchers need to examine how cardiac tissue responds to controlled rhythmic stimulation or when they want to model dysfunction in normal electrical coordination. By changing pulse characteristics and observing the resulting activity, investigators can assess rhythm-related behavior and evaluate how controlled stimulation may support strategies for restoring or regulating cardiac activity.
In neuronal research, controlled pulses provide a way to examine how excitable cells generate and respond to electrical activity. Investigators can vary stimulation timing, frequency, or intensity and then assess changes in signaling behavior. This approach helps connect electrical input with cellular responses and supports biological models of neuronal function and signaling abnormalities.
Electrical stimulation can be used to study whether cultured cells or engineered tissues develop coordinated physiological behavior under defined conditions. Researchers assess responses while controlling pulse frequency, intensity, and timing, then use the results to examine maturation. These experiments contribute to regenerative strategies by testing how stimulation relates to functional development in laboratory-grown biological systems.