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Biofield Therapies
Biofield may refer to: Alternative medicine *Energy (esotericism), biopsychospiritual energy ** Aura (paranormal) ** Prana ** Qi ** Vital energy * Energy medicine, alternative, complementary or integrative medicine ** Energy field disturbance ** Ionized jewelry ** Magnet therapy ** Negative air ionization therapy ** Qigong ** Radionics ** Reiki Medicine * Electrophysiology, scientific study of electrical properties of cells and tissues ** Electroreception, sensory of electric fields by organisms ** Magnetoception, sensory of magnetic fields by organisms ** Bioelectromagnetics, scientific study of electric biofields of organisms * Medical imaging, scientific magnetic or electrical biofield imaging ** Magnetoencephalography, brain imaging by magnetic field sensing ** Electroencephalography, brain imaging by electric field sensing ** Magnetocardiography, heart imaging by sensing its magnetic field ** Magnetogastrography, stomach imaging by sensing magnetic fields ** Magnetom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy (esotericism)
Proponents and practitioners of various esoteric forms of spirituality and alternative medicine refer to a variety of claimed experiences and phenomena as being due to "energy" or "force" that defy measurement and thus are distinguished from the scientific form of energy. Claims related to energy therapies are most often anecdotal, rather than being based on repeatable empirical evidence. There is no scientific evidence for the existence of such energy, and physics educators criticize the use of the term "energy" to describe the ideas as potentially confusing. History Concepts such as "life force", "'' qi''" and "''élan vital''" existed from antiquity. In the 18th century, Franz Mesmer ignited debate with his theory of animal magnetism. Attention to vitalism grew in the 18th and 19th centuries. Interest continued into the 20th century, largely fuelled by adherents of the New Age movement. As biologists studied embryology and developmental biology, particularly before the di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrophysiology
Electrophysiology (from Ancient Greek, Greek , ''ēlektron'', "amber" [see the Electron#Etymology, etymology of "electron"]; , ''physis'', "nature, origin"; and , ''-logy, -logia'') is the branch of physiology that studies the electrical properties of biological cell (biology), cells and tissues. It involves measurements of voltage changes or electric current or manipulations 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, in particular, action potential activity. Recordings of large-scale electric signals from the nervous system, such as electroencephalography, may also be referred to as electrophysiological recordings. They are useful for electrodiagnostic medicine, electrodiagnosis and monitoring (medicine), monitoring. Definition and scope Classical electrophysiological techniques Principle and mechanisms Electrophysiology is the branch of phys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetogastrography
Magnetogastrography is the science of recording magnetogastrograms (MGGs). Magnetogastrograms are recordings of magnetic fields resulting from electrical currents in the stomach. The magnetic fields are typically recorded using SQUIDs. See also * Electrogastrogram * Magnetoencephalography Magnetoencephalography (MEG) is a functional neuroimaging technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using very sensitive magnetometers. Arrays of SQUIDs (s ... External links Gastrointestinal SQUID Technology Laboratory at Vanderbilt University Medical imaging {{treatment-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetocardiography
Magnetocardiography (MCG) is a technique to measure the magnetic fields produced by electrical currents in the heart using extremely sensitive devices such as the superconducting quantum interference device (SQUID). If the magnetic field is measured using a multichannel device, a map of the magnetic field is obtained over the chest; from such a map, using mathematical algorithms that take into account the conductivity structure of the torso, it is possible to locate the source of the activity. For example, sources of abnormal rhythms or arrhythmia may be located using MCG. History The first MCG measurements were made by Baule and McFee using two large coils placed over the chest, connected in opposition to cancel out the relatively large magnetic background. Heart signals were indeed seen, but were very noisy. The next development was by David Cohen, who used a magnetically shielded room to reduce the background, and a smaller coil with better electronics; the heart signals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroencephalography
Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International 10-20 system, or variations of it. Electrocorticography, involving surgical placement of electrodes, is sometimes called "intracranial EEG". Clinical interpretation of EEG recordings is most often performed by visual inspection of the tracing or quantitative EEG analysis. Voltage fluctuations measured by the EEG bioamplifier and electrodes allow the evaluation of normal brain activity. As the electrical activity monitored by EEG originates in neurons in the underlying brain tissue, the recordings made by the electrodes on the surface of the scalp vary in accordance with their orientation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetoencephalography
Magnetoencephalography (MEG) is a functional neuroimaging technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using very sensitive magnetometers. Arrays of SQUIDs (superconducting quantum interference devices) are currently the most common magnetometer, while the SERF (spin exchange relaxation-free) magnetometer is being investigated for future machines. Applications of MEG include basic research into perceptual and cognitive brain processes, localizing regions affected by pathology before surgical removal, determining the function of various parts of the brain, and neurofeedback. This can be applied in a clinical setting to find locations of abnormalities as well as in an experimental setting to simply measure brain activity. History MEG signals were first measured by University of Illinois physicist David Cohen in 1968, before the availability of the SQUID, using a copper induction coil as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medical Imaging
Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology). Medical imaging seeks to reveal internal structures hidden by the skin and bones, as well as to diagnose and treat disease. Medical imaging also establishes a database of normal anatomy and physiology to make it possible to identify abnormalities. Although imaging of removed organs and tissues can be performed for medical reasons, such procedures are usually considered part of pathology instead of medical imaging. Measurement and recording techniques that are not primarily designed to produce images, such as electroencephalography (EEG), magnetoencephalography (MEG), electrocardiography (ECG), and others, represent other technologies that produce data susceptible to representation as a parameter graph versus time or maps that contain data about the measureme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioelectromagnetics
Bioelectromagnetics, also known as bioelectromagnetism, is the study of the interaction between electromagnetic fields and biological entities. Areas of study include electromagnetic fields produced by living cells, tissues or organisms, the effects of man-made sources of electromagnetic fields like mobile phones, and the application of electromagnetic radiation toward therapies for the treatment of various conditions. Biological phenomena 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 where he had been conducting experiments with static electricity. Galvani coined the term ''animal electricity'' to describe the phenomenon, while contemporaries labeled it galvanism. Galvani and contemporaries regarded muscle activation as resulting from an electrical fluid or substance in the nerves. Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetoception
Magnetoreception is a sense which allows an organism to detect the Earth's magnetic field. Animals with this sense include some arthropods, molluscs, and vertebrates (fish, amphibians, reptiles, birds, and mammals, though not humans). The sense is mainly used for orientation and navigation, but it may help some animals to form regional maps. Experiments on migratory birds provide evidence that they make use of a cryptochrome protein in the eye, relying on the quantum radical pair mechanism to perceive magnetic fields. This effect is extremely sensitive to weak magnetic fields, and readily disturbed by radio-frequency interference, unlike a conventional iron compass. Birds have iron-containing materials in their upper beaks. There is some evidence that this provides a magnetic sense, mediated by the trigeminal nerve, but the mechanism is unknown. Cartilaginous fish including sharks and stingrays can detect small variations in electric potential with their electroreceptive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroreception
Electroreception and electrogenesis are the closely-related biological abilities to perceive electrical stimuli and to generate electric fields. Both are used to locate prey; stronger electric discharges are used in a few groups of fishes to stun prey. The capabilities are found almost exclusively in aquatic or amphibious animals, since water is a much better conductor of electricity than air. In passive electrolocation, objects such as prey are detected by sensing the electric fields they create. In active electrolocation, fish generate a weak electric field and sense the different distortions of that field created by objects that conduct or resist electricity. Active electrolocation is practised by two groups of weakly electric fish, the Gymnotiformes (knifefishes) and the Mormyridae (elephantfishes), and by ''Gymnarchus niloticus'', the African knifefish. An electric fish generates an electric field using an electric organ, modified from muscles in its tail. The field is ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reiki
is a Japanese form of energy healing, a type of alternative medicine. Reiki practitioners use a technique called ''palm healing'' or ''hands-on healing'' through which a " universal energy" is said to be transferred through the palms of the practitioner to the patient in order to encourage emotional or physical healing. Reiki is a pseudoscience, and is used as an illustrative example of pseudoscience in scholarly texts and academic journal articles. It is based on '' qi'' ("chi"), which practitioners say is a universal life force, although there is no empirical evidence that such a life force exists. Clinical research does not show reiki to be effective as a treatment for any medical condition, including cancer, diabetic neuropathy, anxiety or depression; therefore it should not replace conventional medical treatment. There is no proof of the effectiveness of reiki therapy compared to placebo. Studies reporting positive effects have had methodological flaws. Etymology A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aura (paranormal)
According to spiritual beliefs, an aura or energy field is a colored emanation said to enclose a human body or any animal or object. In some esoteric positions, the aura is described as a subtle body. Psychics and holistic medicine practitioners often claim to have the ability to see the size, color and type of vibration of an aura. In spiritual alternative medicine, the human being aura is seen as part of a hidden anatomy that reflects the state of being and health of a client, often understood to even comprise centers of vital force called chakras. Such claims are not supported by scientific evidence and are thus pseudoscience. When tested under scientific controlled experiments, the ability to see auras has not been proven to exist. Etymology In Latin and Ancient Greek, ''aura'' means wind, breeze or breath. It was used in Middle English to mean "gentle breeze". By the end of the 19th century, the word was used in some spiritualist circles to describe a speculated subtle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
