Propofol Clinical Trial
Official title:
The Electroencephalogram Analysis in the Differences Between Inhalation Anesthetic and Propofol.
The investigators will record 120 patients who received general anesthesia, their EEG data recorded from Bispectral Index (BIS) machine for emperical mode decomposition (EMD) analysis, the investigators decomposed EEG signal to different oscillations and tried to observe the differences between hypnotic medications through EEG analysis.
The electroencephalography (EEG) is a noninvasive medical technique for monitoring and
recording the electrical activity of brain. The Hilbert-Huang transform (HHT) was proposed to
decompose EEG signal into intrinsic mode functions (IMF) which can obtain instantaneous
frequency data and work well for data that is nonstationary and nonlinear.
The relationship between frontal EEG patterns and hypnotics remain poorly understood. The
investigators only can tell the increase in frontal EEG power and shift power to lower
frequencies during general anesthesia from publications. The investigators are going to
decompose EEG with HHT and find the energy shift during general anesthesia, compare with
different anesthetics.
The investigators will record 120 patients who received general anesthesia, their EEG data
recorded from BIS machine for EMD analysis, the investigators decomposed EEG signal to
different oscillations and tried to observe the differences between hypnotic medications
through EEG analysis.
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