Abstract:
:When entering a synapse, presynaptic pulse trains are filtered according to the recent pulse history at the synapse and also with respect to their own pulse time course. Various behavioral models have tried to reproduce these complex filtering properties. In particular, the quantal model of neurotransmitter release has been shown to be highly selective for particular presynaptic pulse patterns. However, since the original, pulse-iterative quantal model does not lend itself to mathematical analysis, investigations have only been carried out via simulations. In contrast, we derive a comprehensive explicit expression for the quantal model. We show the correlation between the parameters of this explicit expression and the preferred spike train pattern of the synapse. In particular, our analysis of the transmission of modulated pulse trains across a dynamic synapse links the original parameters of the quantal model to the transmission efficacy of two major spiking regimes, that is, bursting and constant-rate ones.
journal_name
Comput Intell Neuroscijournal_title
Computational intelligence and neuroscienceauthors
Mayr C,Partzsch J,Schüffny Rdoi
10.1155/2009/658474subject
Has Abstractpub_date
2009-01-01 00:00:00pages
658474eissn
1687-5265issn
1687-5273pub_type
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