Common applications of electrophysiology (EEG) in the past and today: the technologist's view.
The field of electroencephalography (EEG) has witnessed a dramatic development during the last decade. The electroencephalogram that had been principally used as a 'post-hoc' diagnostic procedure is now fully used as an 'on-line' monitor of neural function with its excellent temporal resolution. Neurophysiological monitoring in the operating room, neurological intensive care unit (ICU) and during endovascular procedures allows early identification of impending neurological deficits before irreversible neurological impairment. Long-term monitoring of scalp and synchronized video-EEG recordings and invasive (depth and subdural) electrode studies are well-established tools in the localization of the epileptogenic region for identification of potential candidates for surgery. The advent of digital EEG with digital storage and the ability to manipulate data with digital reformatting, filter and sensitivity changes has allowed us to maximize the information and reduce artifacts. These changes have revolutionized the way in which EEG is performed and interpreted.
Quinonez
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Department of Neurology, UCLA Medical Center for the Health Sciences, Los Angeles, CA 90024, USA.
D000818:Animals; D004569:Electroencephalography / Q000266:history; D004594:Electrophysiology; D049673:History, 20th Century; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation / Q000379:methods