Track topics on Twitter Track topics that are important to you
This study will investigate problems with muscle weakness and control using electromyography-a test of nerve-muscle cell communication. Advanced techniques called single fiber electromyography and macro-electromyography, which evaluate individual muscle fibers, will be used. Besides aiding in diagnosis, these tests provide information about disease progression that may be useful in guiding therapy.
Adult patients with suspected neurological disorders of muscle control and weakness may be eligible for this study. Normal volunteers may also participate. For the electromyography procedure, a special needle is inserted into a muscle. The patient will slightly tense the muscle and maintain the tension while electrical signals from the muscle fibers are being recorded. The electrical signals are played through a loudspeaker, providing feedback to help the patient tense the muscle the appropriate amount. The test, which is usually done for only one muscle, takes 1 to 2 hours. If needed, short breaks can be taken.
If the patient cannot maintain tension in the muscle for the entire test period, a nerve will be stimulated to activate the muscle. A thin needle is inserted near the nerve, and a series of small electrical shocks are given to activate a nerve fiber. The electromyography needle is inserted into the muscle to measure the response, as described above.
A neurologist receiving specialized training in clinical neurophysiology will do the electromyography procedure under the direct supervision of an experienced neurologist.
This is a training protocol to enable fellows in clinical neurophysiology to learn and perform technically advanced electrodiagnostic studies, such as single fiber EMG and macro EMG, on patients with neuromuscular diseases.
National Institute of Neurological Disorders and Stroke (NINDS)
National Institutes of Health Clinical Center (CC)
Published on BioPortfolio: 2014-07-23T21:56:50-0400
Nowadays there is a growing interest towards non-invasive assessment of urinary dysfunctions in clinical practice. The tendency to use uroflowmetry as a first-line screening tool is based ...
Uroflowmetry(UF) has been the standard first-line diagnostic tool for the evaluation of pediatric voiding dysfunction. But recently, UF combined with pelvic flow electromyography(EMG) is e...
The aim of this study was to assess the effect of a specific protocol of sEMG-BFB in upper limb hemiparesis added to conventional physical therapy on changes in upper extremity functionali...
A handheld surface electromyography device will be tested by clinicians on children with limb hypertonia, and inter-rater reliability will be assessed with and without the device.
The objective of the research is to determine whether the MyotonPRO has a valid and reliable application in facial, head and neck surgery. In addition, the study aims to compare this new t...
To assess the correlation between surface respiratory electromyography(sEMG) and esophageal diaphragm electromyography(EMGdi) at different levels of neural respiratory drive (NRD).
Electromyography (EMG) helps to evaluate disorders and pulmonary behavior, as impairments in respiratory muscle function are associated with the development of diseases. There is a wide range of metho...
Triceps surae (TS) and tibialis anterior (TA) activation patterns have not yet been studied under different types of sport shoes. We hypothesized that sports shoes may reduce the activity patterns of ...
The aim of this systematic review was to examine procedures used and outcome measures reported from surface EMG (sEMG) of extradiaphragm inspiratory muscles in healthy people. Relevant articles were s...
Needle electromyography (EMG) findings help confirm myopathy and may indicate specific pathologic changes on muscle biopsy.
Healthy People Programs are a set of health objectives to be used by governments, communities, professional organizations, and others to help develop programs to improve health. It builds on initiatives pursued over the past two decades beginning with the 1979 Surgeon General's Report, Healthy People, Healthy People 2000: National Health Promotion and Disease Prevention Objectives, and Healthy People 2010. These established national health objectives and served as the basis for the development of state and community plans. These are administered by the Office of Disease Prevention and Health Promotion (ODPHP). Similar programs are conducted by other national governments.
Recording of the changes in electric potential of muscle by means of surface or needle electrodes.
Governmental guidelines and objectives pertaining to public food supply and nutrition including recommendations for healthy diet and changes in food habits to ensure healthy diet.
Surgical reinnervation of a denervated peripheral target using a healthy donor nerve and/or its proximal stump. The direct connection is usually made to a healthy postlesional distal portion of a non-functioning nerve or implanted directly into denervated muscle or insensitive skin. Nerve sprouts will grow from the transferred nerve into the denervated elements and establish contact between them and the neurons that formerly controlled another area.
A technique that involves the use of electrical coils on the head to generate a brief magnetic field which reaches the CEREBRAL CORTEX. It is coupled with ELECTROMYOGRAPHY response detection to assess cortical excitability by the threshold required to induce MOTOR EVOKED POTENTIALS. This method is also used for BRAIN MAPPING, to study NEUROPHYSIOLOGY, and as a substitute for ELECTROCONVULSIVE THERAPY for treating DEPRESSION. Induction of SEIZURES limits its clinical usage.
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...