Vestibular afferents to the motoneurons of glossopharyngeal and vagus nerves in the frog, Rana esculenta

Ádám Deák, Tímea Bácskai, Gábor Veress, Clara Matesz

Research output: Contribution to journalArticle

3 Citations (Scopus)


The aim of this work was to study whether the vestibular afferent fibers establish direct connections with the motoneurons of glossopharyngeal and vagus nerves of the frog, Rana esculenta. In anaesthetized animals the vestibulocochlear nerve and the common root of glossopharyngeal-vagus and accessory (IX-X-XI) nerves were simultaneously labeled with fluorescein dextran amine (vestibulocochlear nerve) and tetramethylrhodamine dextran amine (IX-X-XI). With a confocal laser scanning microscope we could detect close appositions between the vestibular afferent fibers and somatodendritic components of the general and special visceral motoneurons of the ambiguus nucleus of IX-X nerves. The direct impulse transmission may provide a quick and immediate response of cardiovascular and gastrointestinal system upon body displacement.

Original languageEnglish
Pages (from-to)60-65
Number of pages6
JournalBrain research
Publication statusPublished - Aug 25 2009



  • Ambiguus nucleus
  • Brainstem
  • Glossopharyngeal nerve
  • Neuronal labeling
  • Vagus nerve
  • Vestibular system

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology

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