Mayo Clinic Health Library

Nervous system

  • Carotid ultrasound

    Carotid ultrasound — Overview covers purpose, results of imaging test of neck arteries.

  • EEG (electroencephalogram)

    EEG (electroencephalogram) — Overview covers definition, risks, results of this diagnostic test.

  • Electromyography (EMG)

    Electromyography (EMG) — Overview covers definition, risks of this study of the nerves and muscles.

  • Lumbar puncture (spinal tap)

    Lumbar puncture (spinal tap) — Overview covers definition, risks and results of this procedure.

  • Polysomnography (sleep study)

    Polysomnography (sleep study) — Overview covers what to expect, results of this test for sleep conditions.