Improving intraoperative evoked potentials at short latency by a novel neuro-stimulation technology with delayed return discharge

• The delayed discharge stimulation technology generated pulse artifacts with a tail <10 ms. signal-to-noise ratio of the evoked response was improved. method may increase number patients for whom intraoperative monitoring aid in cranial neurosurgery. nerve function records responses at latencies few milliseconds. Unfortunately, these be masked by electrical artifact pulse. In stimulation, return significantly contributes to width artifact. We have pulses an ISIS Neurostimulator (inomed Medizintechnik GmbH) providing novel reduction technique. It delays stimulating beyond latency expected physiological response. This is controlled such that no unintended evoked. 21 neurosurgical interventions motor potentials facial (FNMEP), reduced duration. Compared conventional immediate discharge, improve method. some surgeries, only clearly identifiable signals. extends toolbox modalities rendering interpretation more reliable. technique enhances