Behavioral Plasticity Emulated with Lithium Lanthanum Titanate‐Based Memristive Devices: Habituation

Behavioral plasticity builds up an association between information and an appropriate behavioral response, enabling organisms to adjust their behaviors in response to stimulations from external environments. Habituation is the elementary and ubiquitous form of the behavioral plasticity. A direct emulation of the behavioral habituation with electronic devices is critical in neuromorphic computing. Herein, memristive devices based on a mixed conductor of lithium ions and electrons, lithium lanthanum titanate (LLTO), are fabricated in a Pt/LLTO/Pt structure. Because the physical processes of lithium‐ion migration and polaron hopping in LLTO are similar to the two neuromorphic processes proposed in the dual‐process theory of habituation, the Pt/LLTO/Pt memristive device enables a direct emulation of the habituation in the behavioral plasticity. More importantly, the nine parametric definitions in neuroscience for habituation are realized. The successful emulation of behavioral habituation represents an advance in the hardware implementation of neuromorphic functionalities and may simplify the structure of memristor‐based artificial neural networks.