2005-04-23

For more dictionary entries, see » Biofeedback Dictionary

2005-04-23

For more dictionary entries, see » Biofeedback Dictionary

2005-04-23

For more dictionary entries, see » Biofeedback Dictionary

2005-04-23

For more dictionary entries, see » Biofeedback Dictionary

2005-04-23

For more dictionary entries, see » Biofeedback Dictionary

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

Signal similar to an electrical noise, gaussian distribution. Voltage range : 0 to 10mV. Frequency range : 15Hz to 500Hz. ...

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Electromyography, Electromyography - Electrical Characteristics, Electromyography - Uses, Electromyography - Procedure, Electromyography - Normal results, Electromyography - Abnormal results

Read more here: » Electromyography: Encyclopedia II - Electromyography - Electrical Characteristics

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

There have also been experiments in humans utilizing modern invasive and non-invasive neuroimaging technologies as interfaces. The most commonly studied potential interface for humans has been electroencephalography (EEG), mainly due to its fine temporal resolution, ease of use, portability, and cost of set-up. However practical use of EEG as a BCI requires a great deal of user training and is highly susceptible to noise. In 2004 scientists of the Fraunhofer Society utilized neural networks to shift the learning phase from the user to the co ...

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Brain-computer interface, Brain-computer interface - Neuroprosthetics, Brain-computer interface - BCIs in monkeys, Brain-computer interface - Human BCI research, Brain-computer interface - Practical BCIs, Brain-computer interface - Theme in fiction

Read more here: » Brain-computer interface: Encyclopedia II - Brain-computer interface - Human BCI research

A dictionary of Parapsycology. Please note that words in grey are hyperlinked to a corresponding archive with articles related to that particular topic.

For more dictionary entries, see » Biofeedback Dictionary

The novel is structured as a series of long chapters, each a distinct story of part of a campaign by the hero Sam against the Gods. The first story relates Sam's return from Nirvana to continue the struggle after decades of exile. The subsequent stories are flashbacks as Sam remembers the beginning of his campaign, and the tactics he employed, leading up to the titanic battle of Keenset. In the final chapter the newly returned Sam comple ...

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Lord of Light, Lord of Light - Structure, Lord of Light - Plot, Lord of Light - The Stories, Lord of Light - Characters, Lord of Light - Major Characters, Lord of Light - Minor Characters, Lord of Light - Film version, Lord of Light - Song

Read more here: » Lord of Light: Encyclopedia II - Lord of Light - Structure

Repetitive strain injury is not a specific disease but a loose group of other, more specific conditions. Some of these are: Tendonitis Ulnar nerve entrapment Stenosing tenosynovitis Tenosynovitis Carpal tunnel syndrome DeQuervain's syndrome Thoracic outlet syndrome Trigger finger/thumb Intersection syndrome Reflex sympathetic dystrophy syndrome (RSDS) Note that many of these disorders are interrelated, so a typical sufferer may have ma ...

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Repetitive strain injury, Repetitive strain injury - Specific conditions, Repetitive strain injury - Warning signs, Repetitive strain injury - Prevention, Repetitive strain injury - Treatment

Read more here: » Repetitive strain injury: Encyclopedia II - Repetitive strain injury - Specific conditions

The symptoms include several cyclic color changes: When exposed to cold temperatures, the oxygen supply to the fingertips, toes, and earlobes of Raynaud's disease patients are reduced and the skin color turn pale or white (called pallor) and become cold and numb. When the oxygen supply is depleted, the skin colour turns blue (called cyanosis). These events are episodic and when the episode subsides, or the area is warmed, blood returns to the area and the skin colour turns red (rubor) and t ...

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Raynaud's disease, Raynaud's disease - Symptoms, Raynaud's disease - Disease vs. Phenomenon, Raynaud's disease - Primary Raynaud's disease, Raynaud's disease - Secondary Raynaud's phenomenon, Raynaud's disease - Prevention, Raynaud's disease - Treatment, Raynaud's disease - Reference

Read more here: » Raynaud's disease: Encyclopedia II - Raynaud's disease - Symptoms

Acephalgic migraine is a neurological syndrome. It is a variant of migraine in which the patient may experience aura, nausea, photophobia, hemiparesis and other migraine symptoms but does not experience headache. Acephalgic migraine is also referred to as amigrainous migraine or optical migraine or scintillating scotoma. Sufferers of acephalgic migraine are more likely than the general populat ...

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Migraine, Migraine - Signs & Symptoms, Migraine - Pathophysiology, Migraine - Migraine triggers, Migraine - Treatment, Migraine - Trigger avoidance, Migraine - Preventive drugs, Migraine - Alternative approaches, Migraine - History, Migraine - Prevalence, Migraine - Economic impact, Migraine - Acephalgic migraine, Migraine - Migraine and stroke risk

Read more here: » Migraine: Encyclopedia II - Migraine - Acephalgic migraine

In 1924, the German psychiatrist Hans Berger connected a couple of electrodes (small round discs of metal) to a patient's scalp and detected a small current by using a delicate galvanometer. During the years 1929-1938 he published 14 reports about his studies of EEGs, and much of our modern knowledge of the subject, especially in the middle frequencies, is due to his research (Kaiser 2005). Berger analyzed EEGs qualitatively, but in 1932 G. Dietsch applied Fourier analysis to seven records of EEG and became the f ...

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Neurofeedback, Neurofeedback - History and application, Neurofeedback - Low Energy Neurofeedback System LENS, Neurofeedback - Scientologists Parapsychologists and Less Mainstream Users of Neurofeedback

Read more here: » Neurofeedback: Encyclopedia II - Neurofeedback - History and application

Acephalgic migraine is a neurological syndrome. It is a variant of migraine in which the patient may experience aura, nausea, photophobia, hemiparesis and other migraine symptoms but does not experience headache. Acephalgic migraine is also referred to as amigrainous migraine or optical migraine or scintillating scotoma. Sufferers of acephalgic migraine are more likely than the general populat ...

See also:

Migraine, Migraine - Signs & Symptoms, Migraine - Pathophysiology, Migraine - Migraine triggers, Migraine - Treatment, Migraine - Trigger avoidance, Migraine - Symptomatic control to abort attacks, Migraine - Preventive drugs, Migraine - Alternative approaches, Migraine - History, Migraine - Prevalence, Migraine - Economic impact, Migraine - Acephalgic migraine, Migraine - Migraine and stroke risk

Read more here: » Migraine: Encyclopedia II - Migraine - Acephalgic migraine

While the immediate cause of pain is in the trigeminal nerve, the true cause(s) of cluster headache is complex and not fully understood. Cluster headaches are a type of vascular headache and the intense pain of an attack is also associated with the dilation of blood vessels. Among the most widely accepted theories is that cluster headaches are due to an abnormality in the hypothalamus. This can explain why cluster headaches frequently strike around the same time each day, and during a particular season, as one of the functions the hyp ...

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Cluster headache, Cluster headache - Characteristics, Cluster headache - Incidence, Cluster headache - Pathology, Cluster headache - Treatment, Cluster headache - Other types of headache

Read more here: » Cluster headache: Encyclopedia II - Cluster headache - Pathology

RSI conditions have many varied symptoms. The following may indicate the onset of an RSI. Recurring pain or soreness in neck, shoulders, upper back, wrists or hands. Tingling, numbness, coldness or loss of sensation. Loss of grip strength, lack of endurance, weakness, fatigue. Muscles in the arms and shoulders feel hard and wiry when palpated. Pain or numbness while lying in bed. Often early stage RSI sufferers mistakenly think they are lying on their a ...

See also:

Repetitive strain injury, Repetitive strain injury - Specific conditions, Repetitive strain injury - Warning signs, Repetitive strain injury - Prevention, Repetitive strain injury - Treatment

Read more here: » Repetitive strain injury: Encyclopedia II - Repetitive strain injury - Warning signs

If RSI symptoms have already appeared, there are further methods of treatment which should be used in addition to the above preventative techniques. The sufferer should gather as much information as possible on their disorder. RSI healing generally cannot be achieved solely by medical professionals and requires active participation by the patient over a period of several months. The more the patient understands, the more likely it is that treatment will be effective. Consider reading books (see references) as well as asking seve ...

See also:

Repetitive strain injury, Repetitive strain injury - Specific conditions, Repetitive strain injury - Warning signs, Repetitive strain injury - Prevention, Repetitive strain injury - Treatment

Read more here: » Repetitive strain injury: Encyclopedia II - Repetitive strain injury - Treatment

Direct neural interface devices were the prominent feature of the popular Matrix film series, wherein humanity was enslaved by artificially intelligent robots in a virtual world piped directly into people's brains. These interfaces are an extremely common element of cyberpunk fiction, often characterised as "control of hardware at speed of thought". In the meme wars novels of John Barnes, direct mind-computer interface permits ...

See also:

Brain-computer interface, Brain-computer interface - Neuroprosthetics, Brain-computer interface - BCIs in monkeys, Brain-computer interface - Human BCI research, Brain-computer interface - Practical BCIs, Brain-computer interface - Theme in fiction

Read more here: » Brain-computer interface: Encyclopedia II - Brain-computer interface - Theme in fiction

In some cases, non-invasive methods will not work for the intended purpose, so medical technology has developed minimally-invasive methods, such as hypodermic injection (using the syringe), endoscopy, percutaneous surgery, laparoscopic surgery, coronary catheterization, angioplasty, stereotactic surgery and many others. The benefits for the patient are self-evident. ...

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Non-invasive medical, Non-invasive medical - Diagnostic images, Non-invasive medical - Diagnostic signals, Non-invasive medical - Therapy

Read more here: » Non-invasive medical: Encyclopedia II - Non-invasive medical - Therapy

To perform EMG, needle electrodes are inserted through the skin into the muscle tissue. Each electrode gives only an average picture of the activity of the selected muscle, because skeletal muscles are isolated and often large units. Several electrodes may need to be placed at various locations to obtain an accurate study. Then the patient is asked to contract the muscle. Each muscle fiber that contracts produces an action potential (a change in electrical potential), which is displayed on the electromyogram. The form of the action po ...

See also:

Electromyography, Electromyography - Electrical Characteristics, Electromyography - Uses, Electromyography - Procedure, Electromyography - Normal results, Electromyography - Abnormal results

Read more here: » Electromyography: Encyclopedia II - Electromyography - Procedure