Abstract
We consider two inhibitory (I) and excitatory (E) populations with I to E and E to I interpopulation spike-timing-dependent plasticity (STDP). By changing the noise intensity D, we study the effect of interpopulation STDPs on fast sparsely synchronized rhythms that appear in the two I- and E-populations. Long-term potentiation (LTP) and long-term depression (LTD) for population-averaged values of saturated interpopulation synaptic strengths are thus found to take place. Then, the degree of fast sparse synchronization changes due to the effects of LTP and LTD. In a broad region of intermediate D, the degree of good synchronization (with larger synchronization degree) gets decreased. On the other hand, in a region of large D, the degree of bad synchronization (with smaller synchronization degree) becomes increased. As a result, an “equalization effect” in interpopulation synaptic plasticity occurs in each I- or E-population, where the synchronization degree gets nearly the same in a wide range of D.
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Acknowledgements
Supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. 20162007688).
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Kim, SY., Lim, W. (2021). Equalization Effect in Interpopulation Spike-Timing-Dependent Plasticity in Two Inhibitory and Excitatory Populations. In: Lintas, A., Enrico, P., Pan, X., Wang, R., Villa, A. (eds) Advances in Cognitive Neurodynamics (VII). ICCN2019 2019. Advances in Cognitive Neurodynamics. Springer, Singapore. https://doi.org/10.1007/978-981-16-0317-4_8
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DOI: https://doi.org/10.1007/978-981-16-0317-4_8
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