Which artifacts on EEG are caused by high-frequency radiation?

Updated: Oct 09, 2019
  • Author: Selim R Benbadis, MD; Chief Editor: Helmi L Lutsep, MD  more...
  • Print


Interference from high-frequency radiation from radio, television, hospital paging systems, and other electronic devices can overload EEG amplifiers. The pens may deflect upward or downward to full excursion, and no EEG can be recorded. The cutting and/or coagulating electrode used in the operating room also generates high-voltage high-frequency signals that interfere with the recording system. The best thing to do is turn off the EEG machine while using this instrument.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!