Spinal cord integrity monitoring by adaptive coherence measurement

▶ A somatosensory evoked potential (SEP) adaptive filtering method proved to have less variability than conventional amplitude measurements. This method employed adaptive coherence measurements comparing pre- and post-injury SEPs. ▶ Detection of injury proceeded faster for adaptive coherence than amplitude using simple thresholding using usual change metrics. ▶ These change metrics included one based on standard error and absolute amplitude and another based on abrupt slope change detection.