title: Electrical stimulation of primary olfactory nerve induces two types of variations in the extracellular potassium activity within the glomerulus of the rat olfactory bulb in vivo.
abstract: Primary olfactory nerve stimulation induces a two-step increase in extracellular potassium, as recorded by K+-sensitive microelectrodes inserted into single glomeruli of the rat olfactory bulb. The second rise in K+ (K-peak) occurs in a graded, activity-dependent manner at the basal pole of the glomerular neuropile. This phenomenon appears to be directly related to the rate of extracellular K+ accumulation and is accompanied by a substantial depression of the mitral cell firing rate.
authors.affiliation: Laboratoire de Physiologie Générale II, Université de Nancy I, Vandoeuvre les Nancy, France.
authors.forename: A
authors.initials: A
authors.lastname: Khayari
authors.forename: F
authors.initials: F
authors.lastname: Math
authors.forename: J L
authors.initials: JL
authors.lastname: Davrainville
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D008564:Membrane Potentials / Q000187:drug effects; D009832:Olfactory Nerve / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D011188:Potassium