The highly parallel process in the neuron networks is mediated through a mass of synaptic
interconnections. Mimicking single synapse behaviors and highly paralleled neural
networks has become more and more fascinating and important. Here, oxide-based artificial
synaptic arrays are fabricated on P-doped nanogranular SiO2-based proton conducting
films at room temperature. Synaptic plasticity is demonstrated on individual artificial
synapse. Most importantly, without any intentional hard-wired connection, such synaptic
arrays are intercoupled due to the electric-field induced lateral proton modulation.
The natural interconnection is weakly correlative with distance, and is important
for neural networks. At last, paralleled summation is also mimicked, which provides
a novel approach for building future brain-like computational systems.