Mid-latency auditory evoked potential (MLAEP) as a measure of depth during halothane anesthesia in canines

In this paper the assessment of depth of anesthesia using Halothane through the analysis of MidLatencies Auditory Evoked Potentials is investigated(MLAEP). The MLAEP signals were analyzed in the time and frequency domain. In the time domain, the latencies of the N b and Pb components increased with increasing concentration of anesthetic. Suppression of these peaks was also observed. In the frequency don& attenuation of the 40 Hz component of the MLAEP was observed with increasing concentration of the anesthetic. The the-frequency representation showed localization in the lower frequency components as the depth of anesthesia was increased.