EMG and Nerve-Conduction Studies performed in the clinic for the evaluation and treatment of lumbar and cervical radiculopathy, carpal tunnel syndrome, neuropathy, myasthenia and other muscle or nerve disorders. A nerve conduction study is a recording of the muscular response to electrical stimulation, performed by a technician in the office; it measures the strength and speed nerves cells carry impulses and how well the muscle responds to the impulse. There may be some mild discomfort during the nerve conduction study from a small, but increasing electrical stimulation placed on the skin above the muscle being tested. An EMG, or electromyogram measures the electrical activity of muscle fibers by inserting a small needle electrode into the muscle while it is contracted. EMG testing is performed by a neurologist; muscles are tested one at a time and patients may have some discomfort during the test.