[The branching structure of the bistable dendrite].
A branching structure consisting of three bistable cylindrical branches was considered. Both stable and unstable solutions for the voltage distribution in such a structure, were obtained using the method developed in our laboratory. This made it possible to calculate the input current-voltage characteristic of the bistable branching structure, including unstable segments of this characteristic. Possible stable states of the structure when its proximal end is loaded by a resistance were determined. It is shown that the binary exclusive-OR could be accomplished by the elementary branching structure of a bistable dendrite. A model with overexcitation carried out by Ca-dependent K channels was developed. It is shown that the model parameters do not fall outside the physiological range of values.
Alaburda
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Institute of Biomedical Research, Kaunas University of Medicine, Lithuania.
Baginskas
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Gutman
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D015220:Calcium Channels / Q000502:physiology; D003712:Dendrites / Q000502:physiology*; D017097:Electric Impedance; D008564:Membrane Potentials; D008959:Models, Neurological; D015221:Potassium Channels / Q000502:physiology; D013569:Synapses / Q000502:physiology
D015220:Calcium Channels; D015221:Potassium Channels