single-fiber electromyography (EMG)

Indications

• neuromuscular disease
  • myasthenia gravis
  • Eaton-Lambert syndrome

Clinical significance

• abnormalities are found in neuromuscular diseases, myasthenia gravis, Eaton-Lambert syndrome & others

Procedure

• single fiber techniques record variation in single potentials in individual fibers
• usual macro EMG techniques measure the summated electrical activity of all fibers of a motor unit

More general terms

• electromyography (EMG)