自発放電ニューロンの時間パターンとカオス

概要

論文の詳細を見る
The regular spontaneous firing Onchidium neuron shows various discharge patterns depending on the dc polarizing current : regular beating, regular bursting and irregular bursting dischrges. The one-dimensional map of interspike intervals in irregular discharges indicates that fluctuations in interval are not random but deterministic chaos. These auto-active discharges occur due to steady state negative slope conductance in the subthreshold membrane potential region, and complex discharges patterns result from the interaction between spikes and slow membrane potential oscillations due to slow channels. The modeled neuron of Hodgikin and Huxley type replicates the experimental data very well and suggests a route to chaos through a cascade of period-doubling bifurcations. We also discuss importance of discharge patterns for signal transduction in the nervous system.
日本生物物理学会の論文
1992-07-25