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Our neurologist may use a lumbar puncture to test your spinal fluid. They may recommend the procedure if they believe your symptoms are caused by a problem in your nervous system that can be detected in your spinal fluid.
The procedure involves inserting a needle into the spine after numbing it and taking a sample of spinal fluid.
This procedure can help Our neurologist diagnose myasthenia gravis. In this test, our doctor injects you with a medicine called Tensilon. Then they observe how it affects your muscle movements.
An EMG measures electrical activity between your brain or spinal cord to a peripheral nerve. This nerve is found in your arms and legs, and is responsible for muscle control during times of movement and rest.
EMGs can help Our neurologist diagnose spinal cord disease as well as general muscle or nerve dysfunction.
During this test, Our neurologist-technician inserts small electrodes into your muscles to help measure activity during periods of movement and rest. Such activity is recorded by a machine attached to the electrodes with a series of wires, which may be somewhat uncomfortable.
Oftentimes, a neurologist will order a nerve conduction velocity (NCV) study in conjunction with an EMG. While an EMG measures muscle activity, an NCV assesses the ability of your nerves to send the necessary signals that control these muscles. If Our neurologist recommends both tests, you can likely do EMG first and than other.
During an NCV test, electrodes are taped over the same muscles that you had EMG electrodes in previously. Two sets of electrodes are used here — one sends small pulses in an effort to stimulate your nerves, while the other set measures the results.
In all, the average EMG/NCV combination test may take about an hour or longerTrusted Source to complete. You’ll want to avoid any stimulants, such as caffeine and nicotine, several hours before your test, or else these substances may alter your results.
Our neurologist may also ask that you don’t take any blood-thinning medications or nonsteroidal anti-inflammatory drugs (NSAIDs) for 24 hoursTrusted Source ahead of the EMG.
With electrodes applied to your scalp, an EEG measures electrical activity in the brain. It’s used to help diagnose conditions of the brain, including inflammation, tumors, and injuries, as well as seizures and psychiatric disorders.
Unlike an EMG, an EEG doesn’t usually cause any discomfort. Before the test, a technician places electrodes around the scalp that look like small cups. As small charges in the brain are measured through the electrodes, the technician will create changes in the environment to measure brain signals, such as different lighting or noises.
Like an EMG, you’ll need to avoid stimulants the day prior to the test. You can also expect the EEG to take an hourTrusted Source. Sometimes the test is done while you’re sleeping.
Neurologists may use other types of tests, as well. Although they may not perform the test, they may order it, review it, and interpret the results.
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