title: Loss of cortical evoked responses due to intracranial gas during posterior fossa craniectomy in the seated position.
mesh_terms: D000293:Adolescent; D002540:Cerebral Cortex / Q000503:physiopathology*; D003388:Cranial Fossa, Posterior / Q000601:surgery*; D005073:Evoked Potentials, Somatosensory; D005740:Gases; D006801:Humans; D008297:Male; D011187:Posture; D012886:Skull / Q000601:surgery*
chemical_list: D005740:Gases