Patent ID: 6493576
Filing Date: 2002-12-10
Classification: A61B

Abstract:
A method for measurement and coherent display of stimulus-evoked potentials of the brain of a patient comprising the following steps:A. providing at least two pickup electrodes; B. mounting at least one of the pickup electrodes on an appropriate site on the patient to develop a variable information signal corresponding to evoked potentials of the patient, which potentials are responsive to stimuli applied to the patient and are representative of a given neurophysiological function of the patient; C. mounting at least one of the pickup electrodes on an appropriate site on a patient to develop a base information signal representative of brainstem-evoked potentials of the patient, which potentials are essentially independent of the given neurophysiological function of the patient; D. simultaneously displaying the variable and base information signals for comparison with each other, the display of the base information signal having a higher time resolution than the display of the variable information signal; E. repeating the stimuli evoking the potentials of the patient during given periods of time; F. averaging the variable and base information signals over a time duration considerably greater than each of said given periods; G. and displaying after each of said given periods the signals averaged over said greater time duration in the manner set forth in step D.