Pavlov dog feature memory circuit based on memristor under different emotional conditions

The memristor‐based Pavlov circuits have been extensively studied, but most of the circuits only have learning functions plus forgetting function, and lack emotional function and feature memory. This leads to not be realistic enough for simulating Pavlovian circuit experiments. In this paper, we simulate learning and three forgetting processes on the classic Pavlov circuit, which is consistent with the brain's forgetting mechanism. Then, we add feature memory part, which includes an emotion module, synapse modules, and feature switch modules. The emotion module with positive and negative emotion functions has different effects on memory time, so as to improve its imitating ability of human emotional behavior. The synapse modules and feature switching modules realize different feature memory for different things, so as to promote the circuit's associative memory ability to be more realistic. Through these improvements, the function of the Pavlov dog experiment circuit is more similar to biological mechanism. Furthermore, the LTSPICE software is used to verify the correctness of the proposed circuit.