<prompt> All are indication of evoked potential monitoring except:-Cerebral tumor resectionBrachial plexus repairMastoid surgerySpinal fusion and instrumentation  <response>: Indications for intraoperative monitoring of evoked potential include surgical procedures with possible neurological insult. 1. Spinal fusion instrumentation 2. Spine spinal cord tumor resection 3. Brachial plexus repair 4. Thoracoabdominal aoic aneurysm repair 5. It also facilitate probe localization during stereotactic surgery 