Method and apparatus for analyzing an electro-encephalogram
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United States of America Patent
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Jan 26, 1993
Grant Date -
N/A
app pub date -
Aug 2, 1990
filing date -
Dec 22, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for analyzing an electro-encephalogram (EEG) are described. EEGs from the left and right sides of the head are analyzed substantially simultaneously by detecting bursts of activity having amplitudes which exceed a threshold voltage. Each burst of activity is determined to have ended, i.e. the amplitude is below the threshold voltage, when it is followed by a quiescent interval having a duration of, for example, at least six seconds. The total time of all quiescent intervals occurring within a time period, e.g. ten minutes, is then calculated and displayed. The apparatus includes a digital computer for effecting statistical analysis of total times for many consecutive time periods. The computer may also be used in generating total times. A graphical output representing total times may be generated allowing rapid access of patient progress.
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