Memristor-type Pavlovian associative memory circuits with emotional overshadowing and congruent effects

Purpose This paper aims to design a memristor-based associative memory neural network circuit with emotional overshadowing and congruent effects, considering overshadowing and recovery processes under multiple emotions. Design/methodology/approach The proposed system simulates both overshadowing and recovery under multiple emotional conditions and it mainly includes the following three parts The memory block can realize the learning and forgetting process in Pavlovian associative memory The emotion block can recognize different emotional stimuli which in turn produce different emotional outputs and return to normal when the stimuli disappear The feedback inhibition block can realize the overshadowing between positive music and negative music. Findings The memory block, the emotion block and the feedback inhibition block can work together to realize the functions of overshadowing and recovering from overshadowing under different emotions as well as the obstructing phenomenon caused by long-term overshadowing. Originality/value In this paper, the authors design a memristor-based associative memory neural network circuit with overshadowing and congruent effects to realize the overshadowing and recovery of different emotions. The designed circuit realizes the functions of memory generation and forgetting, as well as judgment of musical stimuli in different emotions, overshadowing and obstructing caused by long-term overshadowing, and recovery after overshadowing, individually.