Neuro-fuzzy closed-loop control of depth of anaesthesia

Authors:
Robert Allen;David Smith
Affiliations:
Institute of Sound and Vibration Research, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, UK;Department of Anaesthesia, University of Southampton, Southampton, Hampshire, SO17 1BJ, UK
Venue:
Artificial Intelligence in Medicine
Year:
2001

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Abstract

The utility of the auditory evoked potential (AEP) is under investigation as a feedback signal for the automatic closed-loop control of general anaesthesia using neural networks and fuzzy logic. The AEP is a signal derived from the electroencephalogram (EEG) in response to auditory stimulation, which may be useful as an index of the 'depth' of anaesthesia. A simple back-propagation neural network can learn the AEP and provides a satisfactory input to a fuzzy logic infusion controller for the administration of anaesthetic drugs, but the problem remains that of reliable signal acquisition.