A graphic record of the contraction of a muscle as a result of electrical stimulation. The recording and study of the intrinsic electrical properties of skeletal muscles.

A diagnostic test that records the electrical responses of skeletal muscles while at rest and during voluntary action and electrical stimulation. During this test, a small needle is inserted into a muscle to record the level of activity.

Commonly known as an EMG, a test where muscle function is recorded and then studied. The electrical impulses are picked up by electrodes placed on the skin and amplified on a screen in the form of wavelike tracings.

The recording and study of skeletal muscle activity, specifically the external sphincter and perineal floor musculature, by means of surface or needle electrodes to determine whether the muscle is contracting.

This is a test of the electrical activity of the nerves and muscles in the arms and legs.

Procedure in which a monopolar needle electrode is introduced into the muscle to be tested, with a surface electrode acting as the reference. The purpose is to record electrical activities of the muscle fibers.

A test that uses electrodes to record the electrical activity of muscle. The information gathered is used to find disorders of the nerves that serve the muscles.

measurement of electrical activity in muscle

Quantified information regarding overall muscle performance and function.

Technique in which surface electrodes are applied to the skin over muscles that the user can voluntarily control. Electrical activity detected by the electrodes can be interpreted and used to control switch activation.

A diagnostic procedure that records muscle electrical potentials through a needle or small plate electrodes. The test can also measure the ability of peripheral nerves to conduct impulses.

Contraction of muscles regarding electrical stimulation. Related specialties: Physical Medicine and Neurology

A diagnostic test that used to measure the electrical activity of the muscles, bladder and the pelvic floor muscle.

A test used to determine the function of the peripheral nerves and nerve roots, involving placement of tiny needles in muscles and provding an electrical stimulus that can be monitored for changes that reflect the function of the connection between the nerve and muscle. This test is usually performed in conjunction with a nerve conduction velocity study (NCV) .

A test in which a small needle is inserted, to record electrical activity of the muscles.

A test in which a small needle is inserted into muscle to record electrical activity inside the muscle.

The measurement of relative nerve activity by electronically measuring and amplifying nerve signals.

An electrical test that helps evaluate the function of different muscles, nerves, and groups of nerves.

An insertion of needle electrodes into muscles to study the electrical activity of muscle and nerve fibers. It may be somewhat painful to the patient. Helps diagnose damage to nerves or muscles.

Procedure that tests nerves and muscles providing information to help determine if surgery may be required.

A method of recording the electrical currents generated in a muscle during its contraction.

A test which measures muscle response to nerve stimulation. Used to evaluate muscle weakness and to determine if the weakness is related to the muscles themselves or a problem with the nerves that supply the muscles.

This is a diagnostic test for many types of neuromuscular disorders. It involves insertion of a small needle into several muscles to obtain information about the severity and the cause of weakness. It is usually combined with nerve conduction studies (NCS) which allow direct measurement of the integrity of various motor and sensory nerves. The skin overlying certain nerves is electrically stimulated and the response is measured over skin or muscle. You can read more about electromyography and nerve conduction velocities here.

electrical test to determine nerve or muscle damage. erythrocyte sedimentation rate (ESR) - a measurement of how quickly red blood cells fall to the bottom of a test tube. When swelling and inflammation are present, the blood's proteins clump together and become heavier than normal. Thus, when measured, they fall and settle faster at the bottom of the test tube. Generally, the faster the blood cells fall, the more severe the inflammation.

Examination of the electrical activity within a muscle at rest or during voluntary or evoked muscular contractions, for the purpose of disease diagnosis.

The recording and study of the intrinsic electrical properties of skeletal muscle by means of surface or needle electrodes to determine whether the muscle is contracting or not, or by inserting a needle electrode into the muscle and observing, by cathode-ray oscilloscope and loud-speaker, the action potentials present in a muscle or induced by voluntary contractions.

A procedure which helps to diagnose damage to nerves or muscles.

Electromyography is the recording of electrical currents generated in an active muscle using an instrument called an electromyogram (EMG). EMG recordings can be used to ascertain causes of muscular weakness, paralysis, involuntary twitching, and abnormal levels of muscle enzymes; EMGs can also be used as part of biofeedback studies.

An examination of the electrical activity of a motor unit, useful in determining the site of injury in a peripheral nerve and in detecting spinal nerve root lesions as well as primary muscle diseases. Needle EMG involves the insertion of needle electrodes into muscle; surface EMG uses surface electrodes instead of needle insertion.

a special recording technique that detects electric activity in muscle. Patients are sometimes offered a type of biofeedback called EMG training, in which they learn to control muscle tension in the face, neck, and shoulders.

The recording of the electrical activity in the muscle; recording the action potentials in a muscle or in muscle groups.

A recording technique that detects muscle activity.

Test used to diagnose neuropathy and check for nerve damage.

a test used to detect nerve function. It measures the electrical activity generated by muscles.

A technique whereby small electrodes are placed into muscle tissue to record the amount of contraction of that muscle.

A laboratory test in which the electrical activity of a muscle or of muscle groups is measured. Useful in determining the prognosis of vocal cord paralysis.

Electromyography (EMG) is a medical technique for evaluating and recording physiologic properties of muscles at rest and while contracting. EMG is performed using an instrument called an electromyograph, to produce a record called an electromyogram. An electromyograph detects the electrical potential generated by muscle cells when these cells contract, and also when the cells are at rest.