Patient Simulator Applied to Auditory Evoked Potentials, Electrocardiography and Electronystagmography

Abstract

This paper describes an electronic device, named SimPac I, developed to simulate auditory evoked potentials of short, middle and long latencies, ECG and electronystagmography signals. It uses sampled waveforms in order to better reproduce real physiologic AEPs. The simulator is based on the ADuC841 microconverter, a device with an 8052-like core, FLASH memory and two 12-bit DACs. SimPac I is portable and easy to operate, and it is very useful for calibration of AEP, ECG, ENG and VENG systems during manufacture and maintenance. The simulator can also be used to support development and testing of DSP algorithms intended to filter and/or average the above mentioned signals. As a result, examples of several waveforms generated by SimPac I are shown.