- Poster presentation
- Open Access
Reorganization of effective network structure with dynamic synapses in cortical circuit and its possible functions
© Katori et al; licensee BioMed Central Ltd. 2013
- Published: 8 July 2013
- Field Model
- Associative Memory
- Presynaptic Terminal
- Bifurcation Parameter
- Synaptic Efficacy
Synaptic transmission efficacy transiently changes in a short period of time with generation of presynaptic spikes. Depending on changes in releasable neurotransmitters and calcium concentration in presynaptic terminals, the transmission efficacy of the dynamic synapses decreases (short-term depression) or increases (short-term facilitation) . Dynamical properties of the neural network with dynamic synapses have been intensively investigated [1–3]. In the associative memory network with dynamic synapses, the network exhibits not only memory retrieved state but also state transitions among stored memory patterns . Further, we propose that the changes in the synaptic transmission efficacy cause the reorganization of effective network structure and, thereby functions of the network changes dynamically according to a required task .
In the neural network with dynamic synapses, the effective network structure can be reorganized; this causes qualitative changes in the population dynamics (bifurcation). In the presentation, we discuss possible network functions on the basis of this mechanism e.g., generation of sequential actions.
This research was supported by the Aihara Project, the FIRST program from JSPS.
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