Affiliation:
1. Department of Neurology and Neurosurgery, University of Colorado Health Sciences Center, Denver, Colorado
Abstract
Abstract
A variant of electroencephalogram (EEG) power spectral mapping called power ratio index (PRI) mapping was used to monitor 15 patients with malignant brain tumors. This index is generated by dividing the low frequency (delta, theta) power by the high frequency (alpha, beta) power. Because the nonparoxysmal effect of a brain tumor on the EEG is reflected as a relative loss of high frequency power and a gain in low frequency power, utilization of the PRI has the effect of placing the epicenter of the “power dysfunction” coincident with the epicenter of the tumor.
Publisher
Ovid Technologies (Wolters Kluwer Health)
Subject
Neurology (clinical),Surgery
Cited by
32 articles.
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