Vestibular caloric test and local anaesthesia: a nystagmographical study on pigeons.
The caloric test was conducted on pigeons before and after the application of infiltration anaesthesia around the investigated ear. After irrigation with the same amount of water at the same temperature, it was observed that following local anaesthesia the caloric response was intensified. This result suggests that the nerve supply and blood supply of the external ear may be one of the factors responsible for the large variability of caloric responses found in routine caloric investigations.
D000772:Anesthesia, Local / Q000379:methods; D000818:Animals; D002150:Caloric Tests / Q000379:methods; D010856:Columbidae; D004424:Ear Canal / Q000098:blood supply / Q000294:innervation / Q000502:physiology*; D004584:Electronystagmography; D014724:Vestibular Function Tests / Q000379:methods