Electrophysiological Profiling
Electrophysiological Profiling - Related Videos
10:46
Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
0 Views •
Cited by 4 •
2015
Radiation exposure is an underestimated risk in complex ablation procedures. Here, we describe a protocol to significantly decrease fluoroscopy time and dosage for both the patient and the lab staff by using a novel non-fluoroscopic catheter visualization system.
05:41
Applying Microfluidics to Electrophysiology
0 Views •
Cited by 1 •
2007
Microfluidics can be integrated with standard electrophysiology techniques to allow new experimental modalities. Specifically, the motivation for the ...
07:50
Electrophysiology of Scorpion Peg Sensilla
0 Views •
Cited by 4 •
2011
This article describes an electrophysiological method for isolating chemical stimulation to individual sensilla via extracellular, tip-recordings under mineral oil.
06:00
Forebrain Electrophysiological Recording in Larval Zebrafish
0 Views •
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.
09:13
Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
0 Views •
Cited by 51 •
2013
This report provides a detailed description of a new remote navigation system based on magnetic driven forces, which has been recently introduced as a new robotic tool for human cardiac electrophysiology procedures.
FAQs
The measured signal determines which level of function the profile can resolve. Membrane-voltage changes and ionic currents describe cellular electrical behavior, whereas action potentials capture firing events and synaptic responses indicate communication between cells. Examining these readouts together helps relate excitability to connectivity and circuit activity, rather than treating every electrical signal as equivalent.
Controlled stimulation provides a way to examine how neural tissue responds to a defined input, while pharmacological conditions allow electrical behavior to be assessed when particular influences are altered. Comparing responses across these conditions can reveal changes in firing, membrane behavior, or synaptic activity. This helps distinguish baseline properties from condition-dependent effects.
Electrophysiological profiling can be performed at the level of individual cells, tissues, or neural circuits, and each scale answers a different question. Cell-level measurements emphasize membrane properties and ionic currents, while circuit-level recordings emphasize coordinated firing and connectivity. Moving between these scales helps connect cellular mechanisms with broader patterns of neural communication and function.
A typical experiment begins by selecting the cells, tissue, or circuit to examine, then using electrodes or patch-clamp pipettes to detect electrical signals. Researchers may apply controlled stimulation or pharmacological conditions before analyzing voltage changes, currents, action potentials, or synaptic responses. The resulting profile can then be compared across preparations or experimental conditions to identify functional differences.
Profiles are especially useful when the goal is comparison. Researchers can examine neuronal subtypes, follow circuit development, assess dysfunction, or test how drugs and genetic changes alter electrical behavior. The same measurements can also help validate engineered neural models by asking whether their activity resembles the expected cellular or network patterns.
The value of these measurements comes from linking electrical behavior to biological function. Distinct firing patterns, excitability, or synaptic responses can provide evidence relevant to sensation, movement, cognition, and neurological disease. Because the approach connects cellular signals with circuit activity, it supports interpretation of how changes at one level may relate to function or dysfunction at another.