North Shore Medical Center offers several types of neurodiagnostic tests, available on an outpatient and inpatient basis. Our technologists record electrical activity from the brain and nervous system using a computer and the data is then interpreted by a group of specially trained neurologists from Essex Neurological. The results are given to your primary care physician, who shares them with you during a follow-up visit.
Neurodiagnostics at Boston area Hospital

NSMC Union Hospital Neurodiagnostic Tests


Electroencephalograms are given when your physician wants to evaluate a myriad of different neurological problems, from common headaches and dizziness to seizure disorders, strokes, syncope, dementia and degenerative diseases. The EEG is also used to determine organic causes for psychiatric symptoms. In addition the EEG is performed during carotid artery surgery to evaluate cortical functioning and in the evaluation of irreversible brain death (this is for inpatients only.) Patients: learn how to prepare for this test


Evoked Potentials are ordered by your physician when he or she wants to evaluate a number of neurological problems, including spinal cord injuries, optic neuritis, multiple sclerosis and acoustic neuroma. Patients: learn how to prepare for this test


Electromyography / Nerve Conductions tests reveal diseases primarily of the peripheral nervous system, which can cause symptoms of tingling, numbness and pain. Patients: learn how to prepare for this test

NSMC Salem Hospital Neurodiagnostic Tests

ENGs, EEGs and EMG/NC tests are performed at NSMC Salem Hospital. 


Electronystagmograms allow us to evaluate inner ear disorders as opposed to neurological, psychological or other health conditions. This test is commonly ordered when a patient experiences dizziness or unsteadiness. It is the gold standard test for evaluation of possible Vestibular Neuritis, Benign Paroxysmal Positional Vertigo (BPPV) and Bilateral Vestibulopathy. Patients: learn how to prepare for this test

To schedule a neurodiagnostic test, office managers or physicians may print and fill out an order form.