Figure 9From: Single trial somatosensory evoked potential extraction with ARX filtering for a combined spinal cord intraoperative neuromonitoring technique SEP and H-reflex amplitude trend. The red plot is the H-reflex and the blue one is the SEP. The amplitude is normalized, the SEP value is divided by 10-6 and the H-reflex is divided by 10-3. The time is in hour.minutes AM.Back to article page