A 31-year-old commercial diver suffered an uncontrolled ascent from 220 ft. His neurologic examination was grossly normal on arriving at the surface and he was immediately recompressed to 200 ft. After decompression, detailed neurologic evaluation, including encephalography, evoked cortical responses, electronystagmography, and detailed neurophysiologic testing revealed no neurologic deficit. The details of the decompression are discussed.