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NeuroDynamix IIConcepts of Neurophysiology Illustrated by Computer Simulations$
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W. Otto Friesen and Jonathon Friesen

Print publication date: 2009

Print ISBN-13: 9780195371833

Published to Oxford Scholarship Online: February 2010

DOI: 10.1093/acprof:oso/9780195371833.001.0001

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Synapse Model

Synapse Model

Chapter:
(p.171) II.6 Synapse Model
Source:
NeuroDynamix II
Author(s):

W. Otto Friesen

Jonathon A. Friesen

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195371833.003.0013

The Synapse model simulates the membrane potentials of three-compartment invertebrate neurons, comprising a soma, the neurite, and an axon. This model includes synaptic conductances to simulate synaptic interactions between neurons and thus can be used to simulate simple circuits as well as synaptic interactions between pairs of neurons. Simulated neuronal interactions can be either of the chemical synaptic variety (excitatory and inhibitory) or electrical (rectifying and nonrectifying). In this model, the types and magnitudes of synaptic interactions are under experimenter control. In addition, the inhibitory synapses can be set to exhibit synaptic fatigue, based on a model in which transmitter depletion leads to reduced transmitter release from the presynaptic terminal and hence to reduced synaptic efficacy. Electrotonic interactions are determined by electrotonic conductances between neurite compartments of two neurons.

Keywords:   parameter, variable, chemical synapse, electrical synapse, excitation, inhibition, summation, chemotonic interactions

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