The American Society of Neurophysiological Monitoring

The American Society of Neurophysiological Monitoring was founded in 1990 to serve the emerging field of neurophysiologic monitoring.  As defined by the Society, neurophysiologic monitoring includes any measure employed to assess the ongoing functional integrity of the central or peripheral nervous system in the operating theatre or other acute care setting.

Intraoperative neurophysiological monitoring (IONM) has evolved over the last several decades. Its mission is protection of the patient’s nervous system.  Neurophysiologic signals are monitored continuously during surgery for adverse changes, detection of which enables corrective action. Risk of postoperative neurological deficit, such as weakness, loss of sensation, hearing loss and impairment of other bodily functions is thereby reduced.  In addition to detection of change, surgical guidance can be offered in specialized circumstances.

Members of the IONM team include but is not limited to: technologists, surgeons, nurses, anesthesiologists, neurophysiologists, and the supervising person. Team members are those who generate the setting & monitor the patient (technologists), identify the changes (technologists and monitoring personnel), institute management plans that involve surgical maneuvers (surgeons), physiological, pharmacological and anesthetic management (anesthesiologists), moving and repositioning of electrical equipment (nurses), and repositioning of the patient (surgeon, anesthesiologists, nurses).

The Society is dedicated to the advancement of quality neurophysiologic monitoring services for neuroprotection.

Founded in 1990 to promote the interests of the specialty of neurophysiological monitoring, the Society continues to advance the industry by upholding their vision and mission through the board, committees, events, and valued members.

Our Vision
The Society serves as the leading organization for the field of interventional neurophysiological assessment and monitoring.

Our Mission
Quality neurophysiological monitoring benefits patient outcomes. The Society:
  • Fosters the growth and stature of neurophysiological monitoring as a profession,
  • Represents and advocates within the medical community on behalf of members,
  • Provides a forum for education and dissemination of knowledge in the field,
  • Develops quality standards for practice and training,
  • Promotes the highest standards of neurophysiological monitoring through research, and
  • Builds partnerships and coalitions with allied professionals.


For certification programs for intraoperative neurophysiological monitoring, please click here.