Fig. 2From: A novel intraoperative continuous monitoring method combining dorsal cochlear nucleus action potentials monitoring with auditory nerve test systemIntra-operative preparation of the FREMAP, DNAP, and ANTS electrodes. A After opening the cistern portion of the dura, FREMAP (Red Arrow), and DNAP (Green Arrow) electrodes were positioned before tumor resection. B ANTS electrode (White Arrow) was inserted into the cochlea via the round windowBack to article page