The use of EEG monitors to assess the level of hypnosis during anaesthesia has become
widespread. Anaesthetists, however, do not usually observe the raw EEG data: they …

Neurological, neurovegetative, and psychic changes following surgery or in tensive care
indicate alterations in cerebral function. When these changes are analyzed exactly, they are …

Background Unlike the other physiological waveforms monitored in anaesthesia, the EEG
lacks a regularly repeating pattern, implying that it would be very difficult for an anaesthetist …

Univariate descriptors such as the mean frequency and spectral edge frequency have been
proposed for intraoperative representation of the EEG. Such univariate descriptors of the …

Methods Six consenting ASA physical status I or II adult patients undergoing elective
operations were studied. The protocol was approved by the local institutional review board …

Background. Power spectral analysis is a well-established method for the analysis of EEG
signals. Spectral parameters can be used to quantify pharmacological effects of …

Depth of anaesthesia is an old concept originally based on the depressant effects of volatile
anaesthetics on the central nervous system. As the dose of anaesthetic is increased, there is …

THE electroencephalogram (EEG) is enjoying a renaissance of interest as a clinical
monitoring tool during anesthesia and sedation. This revival is the result of two recent …

Even today many anaesthesiologists rely on parameters of the autonomic nervous system,
such as blood pressure and heart rate to decide if a patient is adequately anaesthetized. It is …

Recent research has shown that high‐frequency, gamma‐band electroencephalographic
(EEG) oscillations (40–60 Hz) may be an important marker of the conscious state. We …