natus Nicolet, User Manual

Page: 45 / 82

Revised 11/21/18
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Performing a Cortical Stimulation Study
Introduction
The Cortical Stimulator enhances a physician’s ability to conduct cortical
stimulation studies during surgical evaluations for epilepsy and tumors. During a
study, the physician applies an electrical current directly to the cortex using
paired, intracranial electrodes or using a hand-held bipolar stimulator probe. An
EEG technician operates the computer, which may be in a separate (non-sterile)
control room. A nurse or other medical professional may also be present in the
operating room. The EEG recording system records EEG signals directly from
the cortex via intracranial electrodes. By observing the patient in person and
reviewing video and analyzing the recorded EEG and clinical behavior, the
physician can evaluate the epileptiform focus as well as cortical structures and
brain function near tumors.