Accession Number : ADA410487


Title :   Robust Adaptive Control of Hypnosis During Anesthesia


Descriptive Note : Conference paper


Corporate Author : EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZURICH (SWITZERLZND) INST FUER AUTOMATIK


Personal Author(s) : Grieder, Pascal ; Gentilini, Andrea ; Morari, Manfred ; Schnider, Thomas W.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA410487


Report Date : 25 OCT 2001


Pagination or Media Count : 5


Abstract : A closed-loop controller for hypnosis was designed and validated on humans at our laboratory. The controller aims at regulating the Bispectral Index (BIS) - a surrogate measure of hypnosis derived from the electroencephalogram of the patient - with the volatile anesthetic isoflurane administered with a closed-circuit breathing system. The control algorithm consists of a cascaded Internal Model Controller (IMC) where the master loop aims at regulating BIS. The slave loop tracks endtidal concentration references provided by the master controller. In this paper, a new tuning method is presented.


Descriptors :   *ANESTHESIA , *HYPNOSIS , IONS , SYMPOSIA , ADAPTIVE CONTROL SYSTEMS , DIAGNOSTIC EQUIPMENT , MEDICAL RESEARCH , CLOSED LOOP SYSTEMS , ELECTROENCEPHALOGRAPHY , ANESTHETICS , SWITZERLAND.


Subject Categories : PSYCHOLOGY
      MEDICINE AND MEDICAL RESEARCH


Distribution Statement : APPROVED FOR PUBLIC RELEASE