Lewis Peaks [SEP] continent
Lewis Peaks
The Lewis Peaks () are two prominent peaks, high, standing east of Day Island and surmounting the western part of Arrowsmith Peninsula on the west coast of Graham Land, Antarctica. They were first roughly surveyed in 1909 by the French Antarctic Expedition under Jean-Baptiste Charcot. They were resurveyed in 1948 by the Falkland Islands Dependencies Survey who named then for Flight Lieutenant John Lewis, pilot of the Auster airplane which was used from the RRS "John Biscoe" for reconnaissance of ice conditions in Marguerite Bay in
intervention before impairment becomes permanent. Testing with median nerve SEPs is used to identify the sensory and motor cortex during craniotomies and in monitoring surgery at the midcervical or upper cervical levels. Posterior tibial nerve SEP monitoring is widely used for monitoring the spinal cord during scoliosis procedures and other surgical interventions in which the spinal cord is at risk for damage. Recording of far field intracranially generated peaks can facilitate monitoring even when the primary cortical peaks are impaired due to anesthetic agents. Over time, SEP testing and monitoring in surgery have become standard