A cooperative dynamics of network of neural oscillators between the neuronal activity and the synatptic weight

In general, the activity of neurons highly depends on the structure of neural network, namely, the synaptic connections among the neurons. On the other hand, this network structure is also gradually changing, because the synaptic connection is modulated by its plasticity depending on the current neuronal activity. This cooperative dynamics between the neuronal activity and the synaptic connection is essential for realizing high adaptability in brain. However, it is almost unclear what type of functional network structure is organized through such a cooperative dynamics. Thus, we investigate this issue in the modeling study. Considering an oscillatory activity of neurons, we show that the system can be described by the both dynamics of the general phase oscillators and synaptic weights. This system exhibits various types of dynamical behaviors according to the rule of synaptic plasticity.