Electromyography (EMG) Home A-Z Health Information Health Library A-Z Electromyography (EMG) Overview EMG is the other component of NCV, which is used to record the baseline muscle activity, motor units, and recruitment of multiple motor units on complete stimulation.It is helpful in differentiating between disorders of lower motor neuron disorders such as anterior horn cell, nerve, neuromuscular junction, and muscles. Method A thin needle electrode is inserted in the musclesMuscle activity is studied Indications Diagnosis of muscle dystrophy and other muscle diseasesEvaluation of muscle weakness or paralysisSingle fibre EMG for neuromuscular diseasesEvaluation of peripheral neuropathy/ radiculopathy/ nerve compression/ entrapmentEstablishing diagnosis of anterior horn cell disordersEvaluation of cramps/ spasms/ tremors Disclaimer: The information in this Health Library is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional with any questions about a medical condition or before starting any treatment. Use of this site and its content does not establish a doctor–patient relationship. In case of a medical emergency, call your local emergency number or visit the nearest emergency facility immediately.