Teiji Sawa, MD, PhD, is Professor and Director at the University Hospital of Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan. He is conducting research on measuring the depth of anesthesia using electroencephalography (EEG) during general anesthesia. Publications: Yamada T, Obata Y, Sudo K, Kinoshita M, Naito Y, Sawa T. Changes in EEG frequency characteristics during sevoflurane general anesthesia: feature extraction by variational mode decomposition.J Clin Monit Comput. 2023 Oct;37(5):1179-1192. doi: 10.1007/s10877-023-01037-x.  Sawa T, Yamada T, Obata Y. Power spectrum and spectrogram of EEG analysis during general anesthesia: Python-based computer programming analysis. J Clin Monit Comput. 2022 Jun;36(3):609-621. doi: 10.1007/s10877-021-00771-4.  Obata Y, Yamada T, Akiyama K, Sawa T. Time-trend analysis of the center frequency of the intrinsic mode function from the Hilbert-Huang transform of electroencephalography during general anesthesia: a retrospective observational study. BMC Anesthesiol. 2023 Apr 15;23(1):125. doi: 10.1186/s12871-023-02082-4. Hayase K, Shibasaki M, Sawa T. Poincaré Plot Area of Gamma-Band EEG as a Measure of Emergence From Inhalational General Anesthesia. Front Physiol. 2021 Feb 9;12:627088. doi: 10.3389/fphys.2021.627088.