Analyzing the Effects of Varying Durations of Anesthesia on EEG Characteristics in Children

In recent years, there has been a growing focus on whether long-duration anesthesia in children affects their brain function and development. Electroencephalogram (EEG) signals are widely used in anesthesia and state of consciousness assessment, providing valuable insights into cortical activity. Spectrum and signal complexity are key features used to describe EEG signals and effectively characterize cortical activity. In this study, we conducted an analysis of multichannel EEG signals in children during surgery, specifically examining the spectrum and signal complexity. We compared the changes in EEG characteristics across different durations of anesthesia. The results revealed that long-duration anesthesia led to an increase in delta frequency power and a decrease in signal complexity. These EEG characteristics can serve as valuable indices for assessing the state of anesthesia.