Electrophysiology

Cardiology diagnostic tests and procedures - Electrocardiogram. Electrocardiography (ECG/EKG) monitors electrical activity of the heart, primarily as recorded from the skin surface. A 12 lead recording, 6 for the front plane and 6 for the lower chest crossectional plane, is the most commonly used form. Cardiology diagnostic tests and procedures - Holter monitor. A Holter monitor records a continuous EKG rhythm pattern (rarely a full EKG) for 24 hours or more. Thes ...

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Cardiology diagnostic tests and procedures, Cardiology diagnostic tests and procedures - Bedside, Cardiology diagnostic tests and procedures - History, Cardiology diagnostic tests and procedures - Auscultation, Cardiology diagnostic tests and procedures - Laboratory, Cardiology diagnostic tests and procedures - Blood tests, Cardiology diagnostic tests and procedures - Electrophysiology, Cardiology diagnostic tests and procedures - Electrocardiogram, Cardiology diagnostic tests and procedures - Holter monitor, Cardiology diagnostic tests and procedures - Event monitor, Cardiology diagnostic tests and procedures - Cardiac stress testing, Cardiology diagnostic tests and procedures - Medical imaging, Cardiology diagnostic tests and procedures - Coronary catheterization, Cardiology diagnostic tests and procedures - Echocardiogram, Cardiology diagnostic tests and procedures - Intravascular ultrasound, Cardiology diagnostic tests and procedures - Positron emission tomography, Cardiology diagnostic tests and procedures - Computed axial tomography, Cardiology diagnostic tests and procedures - Magnetic resonance imaging, Cardiology diagnostic tests and procedures - Related topics

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"Current Clamp" is the term used to describe a simple recording of trans-membrane voltage with the ability to inject current into a biological cell through the lumen of the recording electrode. The term is a misnomer, and somewhat misleading in that there is nothing being "clamped" in this type of recording. The term current clamp arose from two sources. First, it is often perceived as the "opposite" of voltage-clamp; voltage and current being terms on opposite sides of the Ohm's Law equation (Voltage = (current)x(resistance); ...

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Electrophysiology, Electrophysiology - Intracellular recording, Electrophysiology - Current-clamp techniques, Electrophysiology - Amplifiers, Electrophysiology - Variations on current clamp recording, Electrophysiology - Extracellular recording, Electrophysiology - Voltage clamp, Electrophysiology - Amperometry

Read more here: » Electrophysiology: Encyclopedia II - Electrophysiology - Current-clamp techniques

An axon, or nerve fibre, is a long slender projection of a nerve cell, or neuron, which conducts electrical impulses away from the neuron's cell body or soma. Axons are in effect the primary transmission lines of the nervous system, and as bundles they help make up nerves. Individual axons are microscopic in diameter--typically about one micrometre across-- but may extend to macroscopic lengths. The longest axons in the human body, for example, are those of the sciatic nerve, which run from the base of the spine to the big toe of each foot. These single-cel ...

Including:

• Axon - Growth & Development
• Axon - History

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Bioelectromagnetism (sometimes equated with bioelectricity) refers to the static voltage of biological cells and to the electric currents that flow in living tissues, such as nerves and muscles, as a result of action potentials. Bioelectromagnetism - Description. Biological cells use bioelectricity to store metabolic energy, to do work or trigger internal changes, and to signal one another. Bioelectromagnetism is the electric current produced by action potentials along with the magnetic fields they g ...

Including:

• Bioelectromagnetism - Description
• Bioelectromagnetism - Volume Conductors
• Bioelectromagnetism - Quotes

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Growing axons move through their environment via the growth cone, which is at the tip of the axon. The growth cone has a broad sheet like extension called lamellipodia which contain protrusions called filopodia. The filopodia are the mechanism by which the the entire process adheres to surfaces and explores the surrounding environment. Actin plays a major role in the mobility of this system. Environments with high levels of cell adhesion molecules or CAM's create an ideal environment for axonal growth. This seems to provide a "sticky" ...

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Axon, Axon - Growth & Development, Axon - History

Read more here: » Axon: Encyclopedia II - Axon - Growth & Development

Biological cells use bioelectricity to store metabolic energy, to do work or trigger internal changes, and to signal one another. Bioelectromagnetism is the electric current produced by action potentials along with the magnetic fields they generate through the phenomenon of electromagnetic induction. Bioelectromagnetism is studied primarily through the techniques of electrophysiology. In the late eighteenth century, the Italian physician and physicist, Luigi Galvani, first recorded the phenomenon while dissecting a frog at a table whe ...

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Bioelectromagnetism, Bioelectromagnetism - Description, Bioelectromagnetism - Volume Conductors, Bioelectromagnetism - Quotes

Read more here: » Bioelectromagnetism: Encyclopedia II - Bioelectromagnetism - Description

Growing axons move through their environment via the growth cone, which is at the tip of the axon. The growth cone has a broad sheet like extension called lamellipodia which contain protrusions called filopodia. The filopodia are the mechanism by which the entire process adheres to surfaces and explores the surrounding environment. Actin plays a major role in the mobility of this system. Environments with high levels of cell adhesion molecules or CAM's create an ideal environment for axonal growth. This seems to provide a "sticky" sur ...

See also:

Axon, Axon - Growth & Development, Axon - History

Read more here: » Axon: Encyclopedia II - Axon - Growth & Development

In standard electrical engineering guidelines, the 3 fundamental units of Resistance, Voltage & Current are seen as inhomogeneous values(ie: discrete). However, in Bioelectromagnetism these 3 fundamental units are treated as a single homogeneous object, a method of working with this rule is a visual model called a Volume conductor.... ...

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Bioelectromagnetism, Bioelectromagnetism - Description, Bioelectromagnetism - Volume Conductors, Bioelectromagnetism - Quotes

Read more here: » Bioelectromagnetism: Encyclopedia II - Bioelectromagnetism - Volume Conductors

The English suffix -ology or -logy denotes a field of study or academic discipline, and -ologist describes a person who studies that field. -logy - Etymology. The word ology is a back-formation from the names of these disciplines. "-logy" basically means "the study of ____". Such words are formed from Greek or Latin roots with the terminal -logy derived from the Greek suffix -λογια (-logia), speaking, from λεγειν (legein), ...

Including:

• -logy - Etymology
• -logy - Other words ending in ology
• -logy - Usage
• -logy - List of -ologies
• -logy - A
• -logy - B
• -logy - C
• -logy - D
• -logy - E
• -logy - F
• -logy - G
• -logy - H
• -logy - I
• -logy - J
• -logy - K
• -logy - L
• -logy - M
• -logy - N
• -logy - O
• -logy - P
• -logy - R
• -logy - S
• -logy - T
• -logy - U
• -logy - V
• -logy - X
• -logy - Z
• -logy - Ologies that are not fields of study

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Biophysics (also biological physics) is an interdisciplinary science that applies the theories and methods of physical sciences to questions of biology. Biophysics research today comprises a number of specific biological studies, which do not share a unique identifying factor, or subject themselves to clear and concise definitions. This is the result of biophysics' relatively recent appearance as a scientific discipline. The studies included under the umbrella of biophysics range from sequence comparison to neural networ ...

Including:

• Biophysics - Overview
• Biophysics - Topics in biophysics and related fields
• Biophysics - Famous biophysicists
• Biophysics - Other notable biophysicists

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-logy - A. Acarology, the study of ticks and mites Acridilogy, the study of Grasshoppers and Locusts Actinobiology, the study of the effects of radiation upon living organisms Actinology, the study of the effect of light on chemicals Aerobiology, a branch of biology that studies organic particles, such as bacteria, fungal spores, very small insects and pollen, which are passively transported by the air. Aerology, the study of the free ...

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-logy, -logy - Etymology, -logy - Other words ending in ology, -logy - Usage, -logy - List of -ologies, -logy - A, -logy - B, -logy - C, -logy - D, -logy - E, -logy - F, -logy - G, -logy - H, -logy - I, -logy - J, -logy - K, -logy - L, -logy - M, -logy - N, -logy - O, -logy - P, -logy - R, -logy - S, -logy - T, -logy - U, -logy - V, -logy - X, -logy - Z, -logy - Ologies that are not fields of study

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An electrode in an electrochemical cell is referred to as either an anode or a cathode, words that were also coined by Faraday. The anode is defined as the electrode at which electrons come up from the cell and oxidation occurs, and the cathode is defined as the electrode at which electrons enter the cell and reduction occurs. Each electrode may become either the anode or the cathode depending on the voltage applied to the cell. A bipolar electrode is an electrode that functions as the anode of one cell and the cathode ...

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Electrode, Electrode - Anode and cathode in electrochemical cells, Electrode - Primary cell, Electrode - Secondary cell, Electrode - Other anodes and cathodes, Electrode - Welding electrodes, Electrode - Alternating current electrodes, Electrode - Types of electrode

Read more here: » Electrode: Encyclopedia II - Electrode - Anode and cathode in electrochemical cells

-logy - A. Acarology, the study of ticks and mites Acridilogy, the study of Grasshoppers and Locusts Actinobiology, the study of the effects of radiation upon living organisms Actinology, the study of the effect of light on chemicals Aerobiology, a branch of biology that studies organic particles, such as bacteria, fungal spores, very small insects and pollen, which are passively transported by the air. Aerology, the study of the free atmosphereSee also:

-logy, -logy - Etymology, -logy - Other words ending in ology, -logy - Usage, -logy - List of -ologies, -logy - A, -logy - B, -logy - C, -logy - D, -logy - E, -logy - F, -logy - G, -logy - H, -logy - I, -logy - J, -logy - K, -logy - L, -logy - M, -logy - N, -logy - O, -logy - P, -logy - R, -logy - S, -logy - T, -logy - U, -logy - V, -logy - X, -logy - Z, -logy - Ologies that are not fields of study

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Traditional studies in biology are conducted using statistical ensemble experiments, typically using pico- to micro-molar concentrations of macromolecules. Because the molecules that comprise living cells are so small, techniques such as PCR amplification, gel blotting, fluorescence labeling and in vivo staining are used so that experimental results are observable with an unaided eye or, at most, optical magnification. Using these techniques, biologists attempt to elucidate the complex systems of interactions that give rise to the processes ...

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Biophysics, Biophysics - Overview, Biophysics - Topics in biophysics and related fields, Biophysics - Famous biophysicists, Biophysics - Other notable biophysicists

Read more here: » Biophysics: Encyclopedia II - Biophysics - Overview

Brain - The brain in animals. Three groups of animals, with some exceptions, have notably complex brains: the arthropods (insects and crustaceans), the cephalopods (octopuses, squid, and similar mollusks), and the craniates (vertebrates and their cousins) [1]. The brain of arthropods and cephalopods arises from twin parallel nerve cords that extend through the body of the animal. In arthropods, the brain consists of a central ...

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Brain, Brain - The importance of the brain, Brain - The brain in animals, Brain - Pathology of the brain, Brain - Other matters, Brain - The biology of the brain, Brain - Histology, Brain - Anatomy, Brain - Brain regions in vertebrates, Brain - Function, Brain - The study of the brain, Brain - Fields of study, Brain - Methods of observation, Brain - History, Brain - The brain as a food

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Although technically incorrect, "-ology" is sometimes used to describe a subject rather than the study of it. Technology is a typical example. This usage is also widespread in medicine; for example, pathology is often used for specific disease ("We have not found the pathology yet"). "Ology" can be appended to any word, humorously, when describing its study; such as beer-ology or Wiki-ology. There are a few irregular exceptions to the ending "-ologist"; f ...

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-logy, -logy - Etymology, -logy - Other words ending in ology, -logy - Usage, -logy - List of -ologies, -logy - A, -logy - B, -logy - C, -logy - D, -logy - E, -logy - F, -logy - G, -logy - H, -logy - I, -logy - J, -logy - K, -logy - L, -logy - M, -logy - N, -logy - O, -logy - P, -logy - R, -logy - S, -logy - T, -logy - U, -logy - V, -logy - X, -logy - Z, -logy - Ologies that are not fields of study

Read more here: » -logy: Encyclopedia II - -logy - Usage

Not all words ending in -ology are ologies in the above sense. In some words such as tautology and haplology, the -logy suffix is from the Greek λογος, word, and denotes not a field of study but a type of speech or writing. For example, haplology means the mistake of saying one letter, syllable or word when two or more are required, as in the example of pronouncing the word February somewhat like "Febuary". It should also be pointed out that some words mean to study something, bu ...

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-logy, -logy - Etymology, -logy - Other words ending in ology, -logy - Usage, -logy - List of -ologies, -logy - A, -logy - B, -logy - C, -logy - D, -logy - E, -logy - F, -logy - G, -logy - H, -logy - I, -logy - J, -logy - K, -logy - L, -logy - M, -logy - N, -logy - O, -logy - P, -logy - R, -logy - S, -logy - T, -logy - U, -logy - V, -logy - X, -logy - Z, -logy - Ologies that are not fields of study

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In a vacuum tube or a semiconductor having polarity (diodes, electrolytic capacitors) the anode is the positive (+) electrode and the cathode the negative (−). The electrons enter the device through the cathode and exit the device through the anode. In a three-electrode cell, a counter electrode, also called an auxilliary electrode, is used only to make a connection to the electrolyte so that a current can be applied to the working electrode. The counter electrode is usually made of an inert material, such as ...

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Electrode, Electrode - Anode and cathode in electrochemical cells, Electrode - Primary cell, Electrode - Secondary cell, Electrode - Other anodes and cathodes, Electrode - Welding electrodes, Electrode - Alternating current electrodes, Electrode - Types of electrode

Read more here: » Electrode: Encyclopedia II - Electrode - Other anodes and cathodes

Despite the variance of the species in which the brain is found there are many common features in its cellular make-up, its structure and its function. On a cellular level, the brain is composed of two classes of cell, neurons and glia, both of which contain several different cell types which perform different functions. Interconnected neurons form neural networks (or neural ensembles). These networks are similar to man-made electrical circuits in that they contain circuit elements (neurons) connected by biological wires (nerve fibers). Of c ...

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Brain, Brain - The importance of the brain, Brain - The brain in animals, Brain - Pathology of the brain, Brain - Other matters, Brain - The biology of the brain, Brain - Histology, Brain - Anatomy, Brain - Brain regions in vertebrates, Brain - Function, Brain - The study of the brain, Brain - Fields of study, Brain - Methods of observation, Brain - History, Brain - The brain as a food

Read more here: » Brain: Encyclopedia II - Brain - The biology of the brain

Like most other internal organs, the brain can serve as nourishment. For example, in the Southern United States canned pork brain in gravy can be purchased for consumption as food. This form of brain is often fried with scrambled egg to produce the famous "Eggs n' Brains"[11]. The brain of animals also features in the cuisine of France such as in the dish tête de veau, or head of calf. Although it might consist only of the outer meat of the skul ...

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Brain, Brain - The importance of the brain, Brain - The brain in animals, Brain - Pathology of the brain, Brain - Other matters, Brain - The biology of the brain, Brain - Histology, Brain - Anatomy, Brain - Brain regions in vertebrates, Brain - Function, Brain - The study of the brain, Brain - Fields of study, Brain - Methods of observation, Brain - History, Brain - The brain as a food

Read more here: » Brain: Encyclopedia II - Brain - The brain as a food