EMG (Electromyography) and ENG (Electroneurography / Nerve Conduction Study)

EMG and ENG are essential tools in modern neurological diagnostics, allowing assessment of the condition of muscles and the nerves that control them.

What are EMG and ENG examinations?

• EMG: During an EMG, a thin needle electrode is inserted into the muscle to record its electrical activity at rest and during movement. This helps detect muscle diseases, nerve injuries, and disorders affecting the nerve–muscle connection.
• ENG: During an ENG (nerve conduction study), small electrodes are placed on the skin, and mild electrical impulses are used to measure how quickly and effectively nerve signals travel through peripheral nerves.

When is EMG/ENG recommended?

EMG and ENG can help clarify the cause of symptoms or underlying conditions such as:

• Numbness, tingling, or sensory disturbances
• Muscle weakness, pain, or cramps
• Involuntary muscle twitches or tics
• Nerve injuries and compression syndromes (e.g., carpal tunnel syndrome)
• Muscle diseases (e.g., muscular dystrophy, myopathies)
• Motor neuron diseases (e.g., ALS)
• Peripheral neuropathies or radiculopathies (e.g., sciatica)
  

How is the Examination Performed?

The test is performed on an outpatient basis and is either painless or causes only minimal discomfort. During an ENG, short electrical impulses are delivered through electrodes placed on the skin, while during an EMG, a thin needle electrode is inserted into the muscle. The electrical activity of muscles and nerves is monitored throughout the procedure, and the results help establish an accurate diagnosis.

Why Should You Have an EMG/ENG Test?

• Helps identify the true cause of symptoms (e.g., numbness, muscle weakness)
• Provides an accurate picture of nerve and muscle function
• Offers essential information for designing a personalized treatment plan