Woerd, A. van der

memory anesthesia group patient exemplar effect propofol group e study level memory effect memory effects presentation bispectral category surgery propofol anesthesia anesthetic group c anesthesiology information information processing processing state index target hypnosis memory formation erasmus university rotterdam control university hospital rotterdam stimuli kerssen concentration bis levels target exemplars anesth simulation kerssens trauma e group analg bispectral index generation bis 40 auditory analysis rotterdam stimulus processing performance groups e 0.8 trauma patients 2.10 1.0 hits value alfentanil bonke b stimulus presentation intraoperative period auditory stimuli university stimulus effect size difference target exemplar generation absence c group word presentation category exemplars depth stress anaesthesia monitoring evidence system period range formation intraoperative electroencephalogram sedation