[Hearing ability after dissection of the vertebral nerve. A long-term study].
To prove the influence of the vertebral nerve on hearing in rabbits, the vertebral artery, together with its sympathetic plexus (n. vertebralis Frank), was unilaterally cut at the height of the first vertebral body, the atlas. Both preoperatively and several times after dissection, auditory and vestibular functions were investigated using BERA and electronystagmography. The hearing threshold was not influenced, neither in the first days after the operation nor as much as six months later. The latencies between wave I and V did not change. Similar results were to be found for the vestibular system. There was no imbalance clinically and it was not possible to detect any electronystagmographic difference between the two vestibular organs. These results indicate, that there is still no experimental proof of hearing loss, as a result of disturbance of the sympathetic vertebral nerve.
Hülse
M
M
HNO-Klinik, Abt. Phoniatrie u. Pädand, Fakultät für Klinische Medizin Mannheim, Universität Heidelberg.
Keilmann
A
A
D000818:Animals; D004210:Dissection; D004584:Electronystagmography; D016057:Evoked Potentials, Auditory, Brain Stem; D006309:Hearing / Q000502:physiology*; D006311:Hearing Disorders / Q000209:etiology; D010525:Peripheral Nerves / Q000502:physiology* / Q000601:surgery; D011817:Rabbits; D013564:Sympathetic Nervous System / Q000502:physiology* / Q000601:surgery; D013997:Time Factors; D014711:Vertebral Artery / Q000294:innervation; D014724:Vestibular Function Tests
Das Hörvermögen nach Ausschaltung des Nervus vertebralis. Eine Langzeituntersuchung.