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Electro-immobilisation
Electro-immobilisation is a form of restraint used on livestock as part of animal husbandry. It involves applying an electric current to the animal to interfere with normal nervous activity. The electric current may either be applied via external electrodes, or via an electrode inserted into the anus. The mechanism of immobilisation is by general spastic paralysis resulting from the electric current, and does not have electroanalgesic or anesthesic effects; the animal remains aware while paralysed, and can experience pain. Numerous researchers have found electro-immobilisation to be highly aversive to animals. Electro-immobilisation is banned in several countries and disapproved of by numerous animal welfare organizations. See also * Electrofishing * Electronarcosis Electronarcosis, also called electric stunning or electrostunning, is a profound stupor produced by passing an electric current through the brain. Electronarcosis may be used as a form of electrotherapy in treati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrofishing
Electrofishing is a fishing technique that uses direct current electricity flowing between a submerged cathode and anode. This affects the movements of nearby fish so that they swim toward the anode, where they can be caught or stunned."FISHNET SHOCKINGS" . ''Toronto Star'', December 3, page IN3. Paul Hunter Electrofishing is a common scientific survey method used to sample fish populations to determine abundance, population density and . When performed correctly, electr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronarcosis
Electronarcosis, also called electric stunning or electrostunning, is a profound stupor produced by passing an electric current through the brain. Electronarcosis may be used as a form of electrotherapy in treating certain mental illnesses in humans, or may be used to render livestock unconscious prior to slaughter. History In 1902, Stephen Leduc discovered he could produce a narcotic-like state in animals, and eventually, he tried it on himself, where he remained conscious but unable to move in a dream-like state. In 1951, an American psychiatrist Hervey M. Cleckley published a paper on the results of treating 110 patients having anxiety neuroses with electronarcosis therapy. He argued that patients may benefit from electronarcosis after other treatments have failed. A 1974 paper discussed the advantage of using electronarcosis for short-term general anesthesia. Researchers achieved electronarcosis by applying 180 mA at a frequency of 500 Hertz to the mastoid part of the tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Husbandry
Animal husbandry is the branch of agriculture concerned with animals that are raised for meat, animal fiber, fibre, milk, or other products. It includes day-to-day care, management, production, nutrition, selective breeding, and the raising of livestock. Husbandry has a long history, starting with the Neolithic Revolution when animals were first Domestication, domesticated, from around 13,000 BC onwards, predating farming of the History of agriculture, first crops. During the period of ancient societies like ancient Egypt, cattle, sheep, goats, and pigs were being raised on farms. Major changes took place in the Columbian exchange, when Old World livestock were brought to the New World, and then in the British Agricultural Revolution of the 18th century, when livestock breeds like the English Longhorn, Dishley Longhorn cattle and Lincoln (sheep), Lincoln Longwool sheep were rapidly improved by agriculturalists, such as Robert Bakewell (agriculturalist), Robert Bakewell, to yi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Current
An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net rate of flow of electric charge through a surface. The moving particles are called charge carriers, which may be one of several types of particles, depending on the Electrical conductor, conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or Electron hole, holes. In an Electrolyte#Electrochemistry, electrolyte the charge carriers are ions, while in Plasma (physics), plasma, an Ionization, ionized gas, they are ions and electrons. In the International System of Units (SI), electric current is expressed in Unit of measurement, units of ampere (sometimes called an "amp", symbol A), which is equivalent to one coulomb per second. The ampere is an SI base unit and electric current is a ISQ base quantity, base quantity in the International System of Qua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spastic Paralysis
Spasticity () is a feature of altered skeletal muscle performance with a combination of paralysis, increased tendon reflex activity, and hypertonia. It is also colloquially referred to as an unusual "tightness", stiffness, or "pull" of muscles. Clinically, spasticity results from the loss of inhibition of motor neurons, causing excessive velocity-dependent muscle contraction. This ultimately leads to hyperreflexia, an exaggerated deep tendon reflex. Spasticity is often treated with the drug baclofen, which acts as an agonist at GABA receptors, which are inhibitory. Spastic cerebral palsy is the most common form of cerebral palsy, which is a group of permanent movement problems that do not get worse over time. GABA's inhibitory actions contribute to baclofen's efficacy as an anti-spasticity agent. Pathophysiology Spasticity is usually caused by damage to nerve pathways within the brain or spinal cord that control muscle movement. This can cause an imbalance in the inhibit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroanalgesia
Electroanalgesia is a form of analgesia, or pain relief, that uses electricity to ease pain and belongs to a type of neurotherapy. Electrical devices can be internal or external, at the site of pain (local) or delocalized throughout the whole body. It works by interfering with the electric currents of pain signals, inhibiting them from reaching the brain and inducing a response; different from traditional analgesics, such as opiates which mimic natural endorphins and NSAIDs (non-steroidal anti-inflammatory drugs) that help relieve inflammation and stop pain at the source. Electroanalgesia has a lower addictive potential and poses less health threats to the general public, but can cause serious health problems, even death, in people with other electrical devices such as pacemakers or internal hearing aids, or with heart problems. History The first cases of electroanalgesia were documented by Greek scholars, Plutarch and Socrates, who noticed numbing effects of standing in poo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Restraint
Physical restraint refers to means of limiting or obstructing the freedom of a person's or an animal's bodily movement. Basic methods Usually, binding objects such as handcuffs, legcuffs, ropes, chains, straps or straitjackets are used for this purpose. Alternatively different kinds of arm locks deriving from unarmed combat methods or martial arts are used to restrain a person, which are predominantly used by trained police or correctional officers. This less commonly also extends to joint locks and pinning techniques. Purpose in humans Physical restraints are used: * primarily by police and prison authorities to obstruct delinquents and prisoners from escaping or resisting British Police officers are authorised to use leg and arm restraints, if they have been instructed in their use. Guidelines set out by the Association of Chief Police Officers dictate that restraints are only to be used on subjects who are violent while being transported, restraining the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
