title: Mode of synaptic transmission between vestibular afferents and neurons of the vestibular nucleus in the frog.
abstract: Excitatory postsynaptic potentials (EPSPs) were evoked in vestibular neurons of the isolated frog brainstem by stimulation of the ipsilateral vestibular nerve or by direct intra-axonal activation of single vestibular fibers. Composite as well as single-fiber EPSPs usually displayed two components. A Ca2+-deficient, Mn2+-containing solution abolished the delayed chemical components of the EPSPs, but did not affect the short latency responses suggesting a dual (electrical-chemical) mode of transmission between some vestibular afferents and vestibular neurons.
mesh_terms: D000344:Afferent Pathways / Q000502:physiology*; D000818:Animals; D001306:Auditory Pathways / Q000502:physiology; D005071:Evoked Potentials; D009474:Neurons / Q000502:physiology*; D011895:Rana ridibunda; D013569:Synapses / Q000502:physiology*; D009435:Synaptic Transmission; D014725:Vestibular Nerve / Q000502:physiology*; D014726:Vestibular Nuclei / Q000502:physiology*; D014722:Vestibule, Labyrinth / Q000294:innervation*