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Ion channel regulation of the dynamical instability of the resting membrane potential in saccular hair cells of the green frog (Rana esculenta).

Authors
  • Jørgensen, F
  • Kroese, A B A
Type
Published Article
Journal
Acta physiologica Scandinavica
Publication Date
Dec 01, 2005
Volume
185
Issue
4
Pages
271–290
Identifiers
PMID: 16266369
Source
Medline
License
Unknown

Abstract

Two intrinsic dynamical instabilities of V(m) are present in hair cells. One of these is observed as spontaneous voltage fluctuations by currents through K(IR), K(V) and h-channels in combination with a steady current through MET channels. The other instability shows as regenerative voltage changes involving Ca2+ and K(V) channels. The BK(Ca) channels prevent the spontaneous voltage fluctuations from activating the regenerative system.

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