title: [The effect of calcium ion on ampullary nerve potential].
abstract: The effect of calcium ion (Ca2+) in the endolymphatic and/or perilymphatic space of the posterior semicircular canal (p.s.c.) nerve response was studied. When both endolymph and perilymph contained no Ca2+, no p.s.c. nerve response was observed. When only the endolymph contained Ca2+ and the perilymph was Ca2+ free, again no nerve response was observed. On the other hand, when only the perilymph contained Ca2+, p.s.c. nerve response was evoked. Therefore, Ca2+ in the perilymph was considered to be essential for maintaining the function of the p.s.c. as a mechanoreceptor.
authors.affiliation: Department of Otolaryngology, Hiroshima University School of Medicine.
authors.forename: H
authors.initials: H
authors.lastname: Hirakawa
authors.forename: Y
authors.initials: Y
authors.lastname: Harada
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: Y
authors.initials: Y
authors.lastname: Kanemi
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000502:physiology*; D004710:Endolymph; D066298:In Vitro Techniques; D008465:Mechanoreceptors / Q000502:physiology; D010498:Perilymph; D011892:Rana catesbeiana; D012665:Semicircular Canals / Q000294:innervation* / Q000502:physiology; D000159:Vestibulocochlear Nerve / Q000502:physiology*
chemical_list: D002118:Calcium