Midlatency auditory evoked potentials as indicators of perceptual processing during general anaesthesia

British Journal of Anaesthesia
N A de BeerJ E Beneken

Abstract

We tested the hypothesis that midlatency auditory evoked potentials (MLAEP) can predict the occurrence of long latency AEP components (LLAEP), which are taken as evidence for perceptual processing. Forty-one patients undergoing cardiac surgery were anaesthetized with propofol and alfentanil. During several periods of surgery we recorded LLAEP. Peak-to-peak amplitude measures were used to determine if a particular LLAEP recording trace contained a recognizable waveform. Both before and after each LLAEP recording epoch, MLAEP and the spontaneous electroencephalogram (EEG) were recorded. Peak latencies and amplitudes of brainstem peak V and midlatency peaks Na, Pa, Nb, Pb and Nc, characteristic frequencies from the spontaneous EEG, mean arterial pressure (MAP) and nasopharyngeal temperature (7) were compared between recording epochs with and without clear LLAEP waveforms. These variables were also used in a discriminant analysis to predict the occurrence of an LLAEP waveform. Pa and Nb latencies were significantly shorter both before and after recording epochs in which an LLAEP waveform occurred, compared with epochs in which no LLAEP waveform occurred. Using a combination of up to six EEG, MLAEP, MAP and T measures, it was possib...Continue Reading

Citations

Aug 12, 1999·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·J F Antognini, X W Wang
Jun 30, 2000·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·I RundshagenJ Schulte am Esch
Aug 1, 1997·Electroencephalography and Clinical Neurophysiology·J C van HooffH H Korsten
May 25, 2002·Acta Anaesthesiologica Scandinavica·H AssarehJ Jakobsson
Sep 21, 2000·Psychiatry and Clinical Neurosciences·H NinomiyaN Tashiro
Apr 17, 2001·The Journal of the Acoustical Society of America·S L BellM E Lutman
Nov 15, 2002·The Journal of the Acoustical Society of America·Steven L BellMark E Lutman
Nov 25, 2003·Journal of Veterinary Pharmacology and Therapeutics·L M AntunesP A Flecknell
Mar 12, 1999·Consciousness and Cognition·S Pockett
Nov 26, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·M C Rojas SosaK Jáuregui-Renaud
May 7, 2002·British Journal of Anaesthesia·I RundshagenJ Schulte am Esch
Sep 30, 2010·Korean journal of anesthesiology·Tomoki Nishiyama
May 9, 2021·Neurobiology of Aging·Roisin McMackinBahman Nasseroleslami

❮ Previous
Next ❯

Related Concepts

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.