Before revision:  In previous works without STDPs, fast sparsely synchronized rhythms  were found to appear in a range of noise intensity D . Here, by varying D, we investigate the effect of interpopulation STDPs on population states in the I- and the E-populations.
After revision:  In previous works without STDPs, fast sparsely synchronized rhythms , related to diverse cognitive functions, were found to appear in a range of noise intensity D . Here, by varying D, we investigate the effect of interpopulation STDPs on population states in the I- and the E-populations.