Electro-diagnostic devices are devices that can detect abnormal electrical activity in the brain and body. The devices are used for a variety of neurological disorders. Nerve conduction velocity is one of the most common uses of this technology. Flat electrodes are placed over the nerve affected by the condition. A small electrical pulse is then delivered to the nerve to measure its speed and function. A similar test is performed with a muscle probe, which is inserted into the muscle tissue.
The electrical activity in the body is measured using an electro-diagnostic device. This allows doctors to determine whether a particular injury is caused by a disorder affecting nerve or muscle function. These instruments can also help identify conditions such as muscle weakness and neuromuscular disorders. However, these instruments cannot be used in place of a thorough physical examination. Therefore, they are not a substitute for a comprehensive physical exam. If your doctor suspects an abnormal electrical activity in the body, electrodiagnostic testing can help diagnose the condition.
An electro-diagnostic devices is controlled by software, which requires more resources than hardware. Modern instruments have multiple processors to control different parts of the system. For example, an amplifier and various stimulators may have dedicated processors. The software may reside in different formats, including software that is programmed into the nonvolatile memory, called firmware, and is loaded into the system memory during initialization. The quality and reliability of the software used will influence the utility of the instrument.
An important part of an electro- diagnostic examination is the nerve conduction study. A nerve conduction study enables the doctor to deliver an electrical charge to a peripheral nerve. The charge then travels down the nerve, generating muscle contraction. The patient is then asked to hold an electrode that records the electrical signal. The recording electrode provides information about the impulse, its distance traveled, and the speed of the conduction. With this information, the physician can identify the source of the muscle pain.
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