Electrical Impulse Application
Electrical Impulse Application - Related Videos
04:46
Changing the Direction and Orientation of Electric Field During Electric Pulses Application Improves Plasmid Gene Transfer in vitro
0 Views •
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.
01:27
Induced Electric Fields: Applications
0 Views •
2025
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
14:16
A New Application of the Electrical Penetration Graph (EPG) for Acquiring and Measuring Electrical Signals in Phloem Sieve Elements
0 Views •
Cited by 24 •
2015
Electrical Penetration Graph (EPG) is a well-established technique for studying the feeding behavior of stylet-bearing insects. Here we show a new application of EPG as a non-invasive tool for the acquisition of intracellular electrophysiology recordings of sieve elements (SEs), the cells that form the phloem vasculature in plants.
01:13
Impulse
0 Views •
2023
According to Newton’s second law of motion, the rate of change of the momentum of an object is the net external force acting on it. The total change in momentum between two timepoints thus depends on both the external force acting on it and the time over which it acts. Describing this mathematically, the total change of an object’s motion is proportional to the force vector and the time over which it is applied. This product is called impulse. Additionally, it can be shown that the total...
09:24
Impulsive Pressurization of Neuronal Cells for Traumatic Brain Injury Study
0 Views •
Cited by 8 •
2011
A novel impulsive cell pressurization experiment has been developed using a Kolsky bar device to investigate the molecular/cellular mechanisms of blast-induced traumatic brain injury.
FAQs
Intensity, duration, and timing determine whether an applied signal merely changes membrane potential, reaches the threshold for an action potential, or modifies activity already underway. A stronger or longer input may produce a different response from a brief, precisely timed signal. Controlling these variables allows researchers to relate stimulation parameters to specific changes in neural signaling, physiology, or behavior.
Triggering an action potential occurs when the applied current changes a neuron’s membrane potential enough to reach threshold. Subthreshold or differently timed input may instead alter electrical signaling that is already occurring without initiating a new action potential. This distinction matters because experiments can either test whether a pathway responds directly or examine how stimulation changes existing nervous system activity.
The site receiving stimulation influences which neural activity, sensory or motor pathway, or circuit may be affected. Applying current to selected excitable cells or neural tissue helps connect the electrical input with a particular physiological or behavioral response. Target selection therefore supports more focused investigation of nervous system function and provides a basis for targeted neuromodulation.
A typical study identifies the neural tissue, pathway, or excitable cells of interest, delivers controlled brief electrical signals, and varies their intensity, duration, or timing as needed. Researchers then examine whether activity reaches threshold, changes ongoing signaling, or produces measurable physiological or behavioral effects. This workflow links stimulation conditions with neural and functional outcomes.
Neuroscientists use the approach when they need to test how neural circuits respond to controlled electrical input. It can help assess sensory and motor pathways, examine whether stimulation influences ongoing signaling, and relate neural changes to behavior or physiology. Because the input is controlled, researchers can compare responses under different stimulation conditions while investigating nervous system function.
Measurements may show whether stimulation generates action potentials, modifies ongoing electrical signaling, or changes a physiological or behavioral response. In studies of sensory and motor pathways, these outcomes help indicate how neural activity relates to function. Interpreting the result requires considering the stimulation’s intensity, duration, timing, and the neural tissue or pathway receiving it.
Therapeutic neuromodulation uses targeted electrical input to alter abnormal or impaired neural activity. The same principle studied in experimental neuroscience can therefore support technologies designed to influence nervous system function rather than only observe it. Its relevance lies in controlling stimulation conditions and targeting neural activity so that electrical input may address a specific functional problem.