- published: 26 Aug 2011
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Electrophysiology (from Greek ἥλεκτρον, ēlektron, "amber" [see the etymology of "electron"]; φύσις, physis, "nature, origin"; and -λογία, -logia) is the study of the electrical properties of biological cells and tissues. It involves measurements of voltage change or electric current on a wide variety of scales from single ion channel proteins to whole organs like the heart. In neuroscience, it includes measurements of the electrical activity of neurons, and particularly action potential activity. Recordings of large-scale electric signals from the nervous system, such as electroencephalography, may also be referred to as electrophysiological recordings.
Electrophysiology is the science and branch of physiology that pertains to the flow of ions (ion current) in biological tissues and, in particular, to the electrical recording techniques that enable the measurement of this flow. Classical electrophysiology techniques involve placing electrodes into various preparations of biological tissue. The principal types of electrodes are:
Basics of EP Testing and Ablation was presented by Adam Zivin, M.D. at the Seattle Science Foundation for the 1st Annual St. Jude Medical Electrophysiology Symposium. www.seattlesciencefoundation.org Seattle Science Foundation is a non-profit organization dedicated to the international collaboration among physicians, scientists, technologists, engineers and educators. The Foundation's training facilities and extensive internet connectivity have been designed to foster improvements in health care through professional medical education, training, creative dialogue and innovation. NOTE: All archived recorded lectures are available for informational purposes only and are only eligible for self-claimed Category II credit. They are not intended to serve as, or be the basis of a medical opini...
Dr. LeGras walks us through an Electrophysiology Procedure at the Pediatric Cardiology Center of Oregon. http://www.pccoforegon.com/
This presentation is the first part in a "back-to-basics" anatomy of the heart. This covers the coronary circulation, chambers and valves, blood flow, and layers of the heart.
Researchers at Georgia Tech and MIT have developed a way to automate the process of finding and recording information from neurons in the living brain. The researchers have shown that a robotic arm guided by a cell-detecting computer algorithm can identify and record from neurons in the living mouse brain with better accuracy and speed than a human experimenter. Using this technique, scientists could classify the thousands of different types of cells in the brain, map how they connect to each other, and figure out how diseased cells differ from normal cells. Reference: S. Kodandaramaiah, G. Franzesi, B. Chow, E. Boyden, C.R. Forest, Automated whole-cell patch clamp electrophysiology of neurons in vivo. Nature Methods, Vol. 9(6), p. 585-587, May 2012. (www.nature.com/nmeth/journal/v9/n6/a...
A patient suffering from a type of arrhythmia known as atrial flutter, an abnormal heart rhythm characterized by a fast heartbeat, is treated by Dr. Felix Yang at the Maimonides Heart & Vascular Center. Dr. Yang takes us behind the scenes to give us a glimpse into the moments and cases that define the work of a cardiac electrophysiologist. Learn about the Maimonides Heart & Vascular Center: http://bit.ly/2eOxoWE Learn about Dr. Yang: http://bit.ly/2tFhPri Make an appointment with Dr. Yang: http://bit.ly/2sOUKFW
NOTE - PLEASE WATCH COMPLETE VIDEO TO DEVELOP THE EXACT CONCEPT, DO NOT SKIP IN BETWEEN CORRECTION-In explanation, by mistake i put negative charge on Na ions, sorry for that. it is always postive sign. Most Basic video on membrane physiology! Explains all the basic minute details needed to understand the topic clearly. "Nernst potential" [THE UNSUNG CONCEPT] is the most basic concept which is mostly overlooked, Here I have explained it clearly with example. Above is the main Building Block to comprehend further application of this Basic Concept. DO SUBSCRIBE FOR MORE CONCEPTUAL VIDEOS
This tutorial shows how to simulate the dynamics of the cell membrane electrical potential, based on the classical studies of Hodgkin and Huxley.