title: Temperature-modulated synchronization transition in coupled neuronal oscillators.
abstract: We study two firing properties to characterize the activities of a neuron: frequency-current (f-I) curves and phase response curves (PRCs), with variation in the intrinsic temperature scaling parameter (μ) controlling the opening and closing of ionic channels. We show a peak of the firing frequency for small μ in a class I neuron with the I value immediately after the saddle-node bifurcation, which is entirely different from previous experimental reports as well as model studies. The PRC takes a type II form on a logarithmic f-I curve when μ is small. Then, we analyze the synchronization phenomena in a two-neuron network using the phase-reduction method. We find common μ-dependent transition and bifurcation of synchronizations, regardless of the values of I. Such results give us helpful insight into synchronizations tuned with a sinusoidal-wave temperature modulation on neurons.
authors.affiliation: Department of Brain Science and Engineering, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Wakamatsu, Kitakyushu, Japan. sato-y@brain.kyutech.ac.jp
authors.forename: Yasuomi D
authors.initials: YD
authors.lastname: Sato
authors.forename: Keiji
authors.initials: K
authors.lastname: Okumura
authors.forename: Akihisa
authors.initials: A
authors.lastname: Ichiki
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Shiino
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Câteau
mesh_terms: D000200:Action Potentials / Q000502:physiology*; D000222:Adaptation, Physiological; D000818:Animals; D001683:Biological Clocks / Q000502:physiology*; D003198:Computer Simulation; D006801:Humans; D008959:Models, Neurological; D009415:Nerve Net / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D009435:Synaptic Transmission / Q000502:physiology*; D013696:Temperature