EMG, Inc. - Factbites

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Topic: EMG, Inc.

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	Services - EMG Test
		EMGs can be used to detect abnormal muscle electrical activity that can occur in many diseases and conditions, including muscular dystrophy, inflammation of muscles, pinched nerves, peripheral nerve damage (damage to nerves in the arms and legs), amyotrophic lateral sclerosis (ALS) (also known as Lou Gehrig disease), myasthenia gravis, disc herniation, and others.
		Intramuscular EMG (the most commonly used type) involves inserting a needle electrode through the skin into the muscle whose electrical activity is to be measured.
		The EMG can also be used to detect true weakness, as opposed to weakness from reduced use because of pain or lack of motivation.
	www.338pain.com /services/emg.htm (792 words)

	[ EMG Biofeedback ]
		EMG (electro myo graph) biofeedback (or myo-feedback) is also used for neuro-muscular (motor) rehab for people who have an impairment in the central or peripheral nervous system, for example, stroke, spinal cord injury, traumatic brain injury, cerebral palsy, multiple trauma and/or muscular atrophy.
		EMG (electro myo graph) and electro-neuro-myography are diagnostic medical technologies used to measure the attenuation and speed at which brief electrical impulses travel in nerve axons, for diagnosing various nerve / muscle injuries and diseases.
		EMG (electro myo graph) biofeedback is used by psychologists and therapists to ''measure'' a persons internal level of tension or stress, usually for stress / headache / hyper- tension reduction.
	members.tripod.com /~www_pages/bio-fdbk.htm (2465 words)

	EMG
		At longer muscle lengths, researchers have recorded lower amplitude EMG even when the muscle's force is increased, perhaps because:
		Because the emg signal is actually a summation of muap, some close and some distant from the recording electrodes, it is difficult to know which motor units contribute to it.
		Because most EMG exists in a frequency range between 20 and 200 Hz, and because movement artifacts have frequencies less than 10 Hz, that is the cutoff frequency frequently employed in "high-pass" filters.
	moon.ouhsc.edu /dthompso/pk/emg/emg.htm (901 words)

	EMG
		Typically the EMG 81 is thought to be the more preferred pickup for the bridge position, but I believe that the 81 has too "bright" of a tone for my taste.
		I'll mention the EMG 81 here for use as a neck pickup, which some of you guitarists may disagree with, but like I said earlier, I prefer the 85 for the bridge position and the 81 for a neck pickup.
		When I say that EMGs are active, I mean that they have a built in preamp into the pickups that is powered via a 9-volt battery that is held within the control cavity of the guitar.
	jimosity.tzo.com /Gear/Pickups/EMG.htm (500 words)

	Standards for Reporting EMG Data
		Both force/torque and EMG normalization should include other relevant information such as joint angle(s) and/or muscle length(s) in isometric contractions, and range of joint angle, muscle length, velocity of shortening or lengthening and load applied for non-isometric contractions.
		In computer processing of the EMG it is important to consider these important factors: It is advisable that the raw EMG (after amplification and bandpass filtering) is stored in the computer for digital processing.
		In investigations where the force/torque is correlated to the EMG it is common to normalize the force/torque and its respective EMG, relative to the values at maximal voluntary contraction (MVC) Obtaining the best estimate of MVC from subjects requires some preliminary training.
	isek.bu.edu /publications/standards/emg_standards.html (1020 words)

	EMG Pickups - Frequently Asked Questions
		The EMG PI2 Phase Inverter actively inverts the phase of an EMG pickup giving you a true out-of-phase effect, controllable by a switch.
		Because EMG pickups are designed from the ground up to operate as active pickups, they're not very functional when deprived of power.
		EMG active pickups have higher output levels than traditional passive pickups.
	www.guitar.com.au /pickups/emg/EMGFAQ.html (3256 words)

	EMG Pickups Guitar
		EMG, Inc. PO Box 4394 Santa Rosa, CA 95402 USA
		Each EMG-HZ guitar pickup is created for its unique sound quality and includes features from over 25 years of EMG's design experience.
		EMG's are being used for every kind of music, from Rock and Roll to Jazz.
	www.emginc.com /guitar.asp (270 words)

	EMG - Wikipedia, the free encyclopedia
		EMG, Inc., a company that manufactures guitar pickups.
		This page concerning a three-letter acronym or abbreviation is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title.
		Electromyography, the recording of the extracellular field potentials produced by muscles
	en.wikipedia.org /wiki/EMG (95 words)

	AboutBFS.com - Frequently Asked Questions: General Questions about Benign Fasciculation Syndrome
		An EMG may be ordered to see if you have a pinched nerve in the back or the neck.
		However, if you are taking a blood thinner, you should notify the Lab where your EMG is being done, since in that case the needle part of the test may cause bleeding inside the muscle.
		The EMG is performed by a specialist, the Electromyographer, who is usually a Neurologist or a Physiatrist.
	www.nextination.com /aboutbfs/faqemg.htm (1709 words)

	NeuroTrac ETS EMG and STIM Unit
		EMG Biofeedback is currently being successfully used to treat a growing number of conditions including incontinence, patellofemoral pain, myofascitis, myofacial pain, phantom limb pain, neck and shoulder pain and repetitive strain injury among many others.
		EMG Biofeedback therapy techniques throughout the world are increasingly being used for neuromuscular re-education, rehabilitation and in the evaluation of various maladies by health professionals and also by patients for home training.
		EMG biofeedback is used for measuring muscle response for a wide range of physiotherapy applications including Incontinence and damaged muscles.
	www.veritymedical.co.uk /English/Products/ETS.htm (687 words)

	EMG
		EMG files can be created and saved to retain the necessary information for displaying the EMG analysis.
		When sampling EMG activity, it is often useful to analyze specific intervals of the entire signal.
		EMG’s features appear complex, they are relatively easy to master once you understand the underlying concepts.
	www.sportsci.com /adi2001/adi/services/support/manuals/apas/emg (3705 words)

	EMG Electromyography
		Increasingly, EMG is being used to assist the therapist to diagnose and treat patients with a wide variety of conditions, and for Patients themselves to improve from the visual and audible biofeedback EMG provides.
		EMG gives the patient feedback concerning the state of tension to relaxation of his or her muscles.
		He reports the use of the EMG to measure the electrical activity associated with the contraction of skeletal muscle and to display this precise information to the patient.
	www.veritymedical.co.uk /English/Modes/EMG.htm (600 words)

	TMA: EMG
		Before having an EMG, you will be told not to use body lotions for several days before testing, not to smoke for twenty-four hours before the test, and to avoid coffee, tea or other drinks with caffeine for three hours before the test.
		An EMG is a way of finding causes of muscle weakness or paralysis; muscle problems such as muscle twitching; numbness, tingling or pain; and nerve damage or injury.
		At the same time as the EMG, you may also have a nerve conduction velocity (NCV) test to rule out disorders of the nerve or nerve injuries that may be affecting the muscles.
	www.myositis.org /about_myositis/EMG.cfm (642 words)

	The influence of voluntary tonic EMG level on the vestibular-evoked myogenic potential
		This finding is consistent with previous experiments that determined click-evoked VEMP amplitude is dependent on tonic EMG level [1,24,25]; however, the observed increase in amplitude as a function of EMG target level for tone burst stimuli has not previously been reported.
		In addition, the variability of the EMG amplitude increased as a function of EMG target level, with the least variability obtained at the 30 µV and 50 µV target levels.
		EMG target levels ranging from 30 µV to 50 µV are suggested for clinical application of the VEMP.
	www.vard.org /jour/04/41/3b/akin.html (3591 words)

	Basic Urodynamics - EMG
		EMG audio can be utilized during the CMG as a tool to assist the incontinent patient in identifying proper sphincter relaxation and contraction techniques.
		The common EMG modality for Urodynamics is a gross recruitment pattern, relating to storage and voiding.
		The needle and wire electrodes are placed directly in the sphincter muscle and provide the most reliable information.
	www.life-tech.com /uro/urolib/emg.htm (304 words)

	NASS - Diagnosing Spine Problems with EMG and NCS
		The EMG section includes a small sterilized needle being inserted in the muscles to be tested.
		An EMG examination is typically ordered by a physician to evaluate for muscle or nerve damage as part of a medical workup.
		As part of the EMG a very small needle is inserted into various muscles in the arm, leg, neck or back where you are having symptoms.
	www.spine.org /fsp/troubleshooting-electro.cfm (1322 words)

	Electromyogram (EMG) and Nerve Conduction Studies
		The test may be performed by an EMG technologist or a doctor specializing in diseases of the nervous system (neurologist) or in physical rehabilitation (physiatrist).
		Both EMG and nerve conduction studies can help diagnose a condition called post-polio syndrome that may develop months to years after a person has had polio.
		The results from EMG and nerve conduction studies are usually not enough on their own to diagnose a condition.
	www.webmd.com /hw/health_guide_atoz/hw213852.asp (1740 words)

	Emerging Markets Group : Business Solutions for Development Impact
		EMG is pleased to present you with our new visual identity — a graphic symbol of the way EMG brings fresh ideas for development to the four corners of the world.
		EMG is Proud to Contribute to a Mango Farmer's Success in Kenya.
		EMG applies broad knowledge and innovative approaches to achieve social progress and economic growth.
	www.emergingmarketsgroup.com (215 words)

	Neurological Research: Invariability of the privileged direction of the maximal EMG activity during speed-related activation for reaching in the vertical plane
		To characterize the tuning of phasic EMG activities for the seven recorded muscles (brachioradialis, biceps, medial and long head of triceps, anterior and posterior deltoid, latissimus dorsi), we digitally compressed the EMG activities corresponding to slow reaches to the same targets into the time frame of the fast EMG traces.
		The invariability of the privileged direction of the M peak EMG was thus observed for six of the seven muscles investigated.
		The rectified and averaged EMG activity related to slow movements (12 movements for each direction, recorded after three practice trials for each direction) was digitally compressed into the time frame of the fast EMG trace.
	www.findarticles.com /p/articles/mi_qa3909/is_200212/ai_n9152698 (1267 words)

	EMG-quality-issues
		The EMG (including the nerve conduction study) is an extension of the neurological examination.
		Similarly, reports from all EMG sources should be reasonably consistent with what you have learned to expect from the EMG sources that you consider to be most reliable.
		Each electromyographer and EMG laboratory has its own set of normal values, but they should be within the generally accepted range.
	www.emg-online.net /EMG-quality-issues.htm (888 words)

	EMG Procedure
		You are being sent to the EMG lab because you have numbness, tingling, pain, weakness, and/or muscle cramping.
		Needle EMG (Electromyography) For this part of the exam, a small, thin needle is inserted into several muscles to see if there are any problems.
		Some of the tests that the EMG doctor may use are nerve conduction studies (NCSs), needle EMG, and evoked potentials.
	www.ucsf.edu /neuro4m/emg2.htm (504 words)

	Homing In on Your requirements -- EMG
		The size of the EMG response depends on a number of factors, including the distance between the electrodes as well as the size of the muscle under examination.
		The EMG is usually measured using a skin surface electrode placed at either end of the axis of motion of the muscle.
		The Electromyograph or EMG signal is associated with the activation of thousands of tiny muscle strands making up a muscle or muscle group.
	www.ufiservingscience.com /HiEmg.html (327 words)

	MedlinePlus Medical Encyclopedia: Electromyography
		EMG is most often used when people have symptoms of weakness and examination shows impaired muscle strength.
		Trauma to the muscle from EMG may cause false results on blood tests (such as creatine kinase), a muscle biopsy, or other tests.
		For an EMG, a needle electrode is inserted through the skin into the muscle.
	www.nlm.nih.gov /medlineplus/ency/article/003929.htm (581 words)

	EMG systems
		You always have the confidence that your EMG signal is reliable and accurate, the system requires no setting up, and there are no batteries to worry about.
		Our new system is the result of several years’ developments to build an EMG system suitable for any lab - it is available in a range of three compatible systems with the ability to upgrade to add additional channels.
		EMG analysis and Graphing software is available from Motion Lab Systems.
	www.emgsrus.com /emg.htm (1120 words)

	EMG data collection
		The DI-720 can display real-time EMG data on your PC as the subjects muscles contract - offering substantial advantages over the traditional record and review afterwards approach.
		The multitasking abilities of the WinDaq software allow EMG data capture and the real-time display of the data to function in the background while running any combination of programs in the foreground.
		Note that WinDaq/Lite does not support EMG recording rates and is effectively limited to EMG display only.
	www.emgsrus.com /dataacq.htm (901 words)

	Surface EMG Bioliograpy
		EMG Biofeedback and the treatment of tension headaches: A systematic analysis of treatment components.
		EMG Muscle Scanning and Diagnostic Manual For Surface Recordings.
		EMG Muscle Scanning: Stability of Hand Held Surface Electrodes.
	www.semg.org /education/bibliography.htm (3336 words)

	EMG - Staff
		She has worked for EMG on a part-time basis since resigning in 1999.
		She has been with EMG on a part-time basis since 1996.
		Stephen Law has been with EMG since 1992 and is the Director.
	www.emg.org.za /about/staff.htm (237 words)

	Summary-Simultaneous use of EMG/FES
		Because EMG measuring amplifiers typically can not withstand such high voltage input levels, the leads coming from and EMG electrodes (which could also serve as a FES electrodes maybe...?) to the amplifiers will need to be isolated during the stimulus input period.
		Hence, the period of time for EMG sampling is rather significant and is typically greater than 90% of real time.
		J. Physiol ?:391-4 1987 Mizrahi et al EMG as an indicator of fatigue in isometrically FES activated paralysed muscles.
	isb.ri.ccf.org /biomch-l/archives/biomch-l-1996-08/00030.html (779 words)

	Electromyography (EMG) - NeuroHaven
		In the strict sense of the word, EMG only refers to the needle electrode examination of muscles, however is has traditionally been used to refer to both NCS and needle EMG.
		Needle EMG is essential to establish the diagnosis.
		needle EMG evidence of denervation in distal muscles is not always present and is not essential for the diagnosis.
	www.neurohaven.com /emg1.htm (1424 words)

	EMG - Home
		EMG is a not-for-profit NGO based in Cape Town, South Africa.
		Through our work, we hope to encourage the development of environmental policies and practices that address environmental injustice and promote sustainable development.
	www.emg.org.za (212 words)

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Topic: EMG, Inc.

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